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As filed with the Securities and Exchange Commission on February 19, 2013

Registration Statement No. 333-

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form S-3

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

PARKER-HANNIFIN CORPORATION

(Exact name of registrant as specified in its charter)

6035 Parkland Boulevard

Cleveland, Ohio 44124-4141

(216) 896-3000

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Thomas A. Piraino, Jr.

Vice President, General Counsel and Secretary

Parker-Hannifin Corporation

6035 Parkland Boulevard

Cleveland, Ohio 44124-4141

(216) 896-3000

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies To:

Thomas C. Daniels, Esq.

Jones Day

901 Lakeside Avenue

Cleveland, Ohio 44114-1190

(216) 586-3939

Approximate date of commencement of proposed sale to the public: From time to time after this registration statement becomes effective.

If the only securities being registered on this form are being offered pursuant to dividend or interest reinvestment plans, please check the following box.    ¨

If any of the securities being registered on this form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box.    x

If this form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.    ¨

If this form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.    ¨

If this form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box.    x

If this form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box.    ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

CALCULATION OF REGISTRATION FEE

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PROSPECTUS

PARKER-HANNIFIN CORPORATION

Debt Securities

Common Shares

Serial Preferred Stock

Depositary Shares

Warrants

Stock Purchase Contracts

Stock Purchase Units

We may offer from time to time, in one or more offerings, debt securities, common shares, serial preferred stock, depositary shares, warrants, stock purchase contracts and stock purchase units. This prospectus describes the general terms of these securities and the general manner in which we will offer them. We will provide the specific terms of the securities in one or more supplements to this prospectus. The prospectus supplements will also describe the specific manner in which we will offer these securities and may also supplement, update or amend information contained in this prospectus. You should read this prospectus and any related prospectus supplement carefully before you invest in our securities. This prospectus may not be used to offer and sell our securities unless accompanied by a prospectus supplement describing the method and terms of the offering of those offered securities.

We may sell the securities on an immediate, continuous or delayed basis directly, through underwriters, dealers or agents as designated from time to time, or through a combination of these methods. We reserve the sole right to accept, and together with any underwriters, dealers and agents, reserve the right to reject, in whole or in part, any proposed purchase of securities. The names of any underwriters, dealers or agents will be included in a prospectus supplement. If any underwriters, dealers or agents are involved in the sale of any securities, the applicable prospectus supplement will set forth any applicable commissions or discounts. In addition, the underwriters may overallot a portion of the securities.

Our common shares are listed on the New York Stock Exchange under the symbol “PH.” None of our other securities are listed on any national securities exchange.

Investing in our securities involves certain risks. Please read carefully the section titled “Risk Factors” beginning on page 1 of this prospectus.

Our executive offices are located at 6035 Parkland Boulevard, Cleveland, Ohio 44124-4141 and our telephone number is (216) 896-3000.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus is February 19, 2013.

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We have not authorized any dealer, salesperson or other person to give any information or to make any representation other than those contained in or incorporated by reference into this prospectus, any applicable supplement to this prospectus or any applicable free writing prospectus. We do not take responsibility for any information or representation not contained in or incorporated by reference into this prospectus, any applicable prospectus supplement or applicable free writing prospectus. This prospectus, any applicable prospectus supplement and any applicable free writing prospectus do not constitute an offer to sell or the solicitation of an offer to buy any securities other than the registered securities to which they relate. Nor do this prospectus, any applicable prospectus supplement and any applicable free writing prospectus constitute an offer to sell or the solicitation of an offer to buy securities in any jurisdiction to any person to whom it is unlawful to make such offer or solicitation in such jurisdiction. You should not assume that the information contained in this prospectus, any applicable prospectus supplement, the documents incorporated herein and therein by reference, and any applicable free writing prospectus is correct on any date after their respective dates, even though this prospectus, an applicable prospectus supplement or an applicable free writing prospectus is delivered or securities are sold on a later date. Our business, financial condition and results of operations may have changed since those dates.

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ABOUT THIS PROSPECTUS

This prospectus is part of a Registration Statement on Form S-3 that we filed with the Securities and Exchange Commission, or the SEC, under the “shelf” registration process. Under this shelf registration process, we may sell, at any time and from time to time, any combination of the securities described in this prospectus in one or more offerings. This prospectus provides you with a general description of the securities we may offer. Each time we sell securities, we will provide a prospectus supplement that will contain specific information about the terms of that offering. This prospectus does not contain all of the information included in the registration statement. For a more complete understanding of the offering of the securities, you should refer to the registration statement, including its exhibits. The applicable prospectus supplement may also add, update or change information contained in this prospectus. You should read both this prospectus and any applicable prospectus supplement together with additional information under the heading “Where You Can Find More Information.”

References in this prospectus to the terms “we,” “our,” “us” or “Parker” or other similar terms mean Parker-Hannifin Corporation, unless we state otherwise or the context indicates otherwise.

RISK FACTORS

Before you purchase securities offered pursuant to this prospectus, you should be aware of various risks, including but not limited to those discussed under the caption “Risk Factors” included in our most recent Annual Report on Form 10-K, which is incorporated into this prospectus by reference and may be updated and modified periodically in our reports filed with the SEC. See “Information We Incorporate by Reference” for more information on these reports. You should carefully consider these risk factors together with all other information in this prospectus and the applicable prospectus supplement before you decide to invest in the securities. If any of these risks actually occurs, our business, results of operations and cash flows could suffer. In that case, the trading price of our securities could decline, and you could lose all or a part of your investment.

PARKER-HANNIFIN CORPORATION

We are a leading worldwide diversified manufacturer of motion and control technologies and systems, providing precision engineered solutions for a wide variety of mobile, industrial and aerospace markets.

Parker was incorporated in Ohio in 1938. Its principal executive offices are located at 6035 Parkland Boulevard, Cleveland, Ohio 44124-4141, telephone (216) 896-3000. We also maintain a website that contains additional information about us at http://www.phstock.com. Information on or accessible through our website is not part of, or incorporated by reference into, this prospectus, other than documents filed with the SEC that we incorporate by reference.

DISCLOSURE ABOUT FORWARD-LOOKING STATEMENTS

Forward-looking statements contained in this prospectus, any prospectus supplement or free writing prospectus, the documents incorporated by reference into this prospectus and other written reports and oral statements we may make from time to time are made based on known events and circumstances at the time of release and, as such, are subject in the future to unforeseen uncertainties and risks. These types of statements are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. You can typically identify forward-looking statements by the use of forward-looking words, such as “may,” “will,” “could,” “project,” “believe,” “anticipate,” “expect,” “estimate,” “continue,” “potential,” “plan” and “forecast.” All statements regarding future performance, earnings projections, events or developments are forward-looking

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statements. It is possible that our future performance and our earnings projections for Parker, including our individual segments, may differ materially from current expectations, depending on economic conditions within our mobile, industrial and aerospace markets, and our ability to maintain and achieve anticipated benefits associated with announced realignment activities, strategic initiatives to improve operating margins, actions taken to combat the effects of the current economic environment, and growth, innovation and global diversification initiatives. A change in economic conditions in individual markets may have a particularly volatile effect on segment performance. Among other factors which may affect future performance are:

These factors and the other risk factors described in this prospectus and any prospectus supplement, including the documents incorporated by reference, are not necessarily all of the important factors that could cause our actual results, performance or achievements to differ materially from those expressed in or implied by any of our forward-looking statements. Other unknown or unpredictable factors also could harm our results. Consequently, there can be no assurance that the actual results or developments anticipated by us will be realized or, even if substantially realized, that they will have the expected consequences to or effects on us. You should carefully read the section entitled “Risk Factors” included in our most recent Annual Report on Form 10-K, which is incorporated into this prospectus by reference and may be updated and modified periodically in our reports filed with the SEC. See “Information We Incorporate by Reference” for more information on these reports. We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

WHERE YOU CAN FIND MORE INFORMATION

We file reports, proxy statements and other information with the SEC. Our SEC filings are available on the SEC’s website at www.sec.gov. Information on or accessible through the SEC’s website is not part of, or incorporated by reference into, this prospectus, other than documents filed with the SEC that we incorporate by reference. You may also read and copy any document we file with the SEC at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for more information on the Public Reference Room.

We also make available free of charge on our website at www.phstock.com our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and, if applicable, amendments to

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those reports filed or furnished pursuant to Section 13(a) of the Securities Exchange Act of 1934, or the Exchange Act, as well as proxy materials we file with the SEC pursuant to Section 14 of the Exchange Act, as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. Our Code of Conduct, Board of Directors Guidelines on Significant Corporate Governance Issues and Independence Standards for Directors are available free of charge on our website at www.phstock.com or in print by writing to Parker-Hannifin Corporation, 6035 Parkland Boulevard, Cleveland, Ohio 44124-4141, Attention: Secretary, or by calling (216) 896-3000. Information on or accessible through our website is not part of, or incorporated by reference into, this prospectus, other than documents filed with the SEC that we incorporate by reference.

INFORMATION WE INCORPORATE BY REFERENCE

The SEC allows us to incorporate by reference the information we file with it, which means:

We incorporate by reference the documents listed below which we filed with the SEC under the Exchange Act:

We also incorporate by reference each of the documents that we file with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this prospectus until the offering of the securities terminates. We will not, however, incorporate by reference in this prospectus any documents or portions of any documents that are not deemed “filed” with the SEC, including any information furnished pursuant to Item 2.02 or Item 7.01 of our current reports on Form 8-K unless, and except to the extent, specified in such current reports or herein.

You may request a copy of any of these filings (other than an exhibit to those filings, unless we have specifically incorporated that exhibit by reference into the filing), at no cost, by calling or writing us at the following address:

Secretary

Parker-Hannifin Corporation

6035 Parkland Blvd.

Cleveland, Ohio 44124-4141

Telephone Number: (216) 896-3000

Any statement contained or incorporated by reference in this prospectus or any prospectus supplement shall be deemed to be modified or superseded for purposes of this prospectus or the applicable prospectus supplement

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to the extent that a statement contained in this prospectus or the applicable prospectus supplement, or in any subsequently filed document which also is incorporated in this prospectus or any prospectus supplement by reference, modifies or supersedes such earlier statement. Any statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this prospectus or the applicable prospectus supplement. Any statement made in this prospectus or the applicable prospectus supplement concerning the contents of any contract, agreement or other document is only a summary of the actual contract, agreement or other document. If we have filed or incorporated by reference any contract, agreement or other document as an exhibit to the registration statement of which this prospectus is a part, you should read the exhibit for a more complete understanding of the document or matter involved. Each statement regarding a contract, agreement or other document is qualified by reference to the actual document.

USE OF PROCEEDS

Unless we inform you otherwise in the applicable prospectus supplement, we expect to use the net proceeds from the sale of securities for general corporate purposes. These purposes may include, but are not limited to:

Pending any specific application, we may initially invest funds in short-term marketable securities or apply them to the reduction of short-term indebtedness.

RATIO OF EARNINGS TO FIXED CHARGES

The following table sets forth our ratio of consolidated earnings to fixed charges for the periods presented:

The ratio has been computed by dividing earnings by fixed charges. For purposes of computing the ratio:

We did not have any serial preferred stock outstanding during the periods presented above. There were no serial preferred stock dividends paid or accrued during the periods presented above.

DESCRIPTION OF DEBT SECURITIES

This section describes the general terms and provisions of the debt securities that we may issue separately, upon exercise of a debt warrant, in connection with a stock purchase contract or as part of a stock purchase unit

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from time to time in the form of one or more series of debt securities. The applicable prospectus supplement will describe the specific terms of the debt securities offered through that prospectus supplement as well as any general terms described in this section that will not apply to those debt securities.

Our unsecured senior debt securities will be issued under an indenture, dated May 3, 1996, between us and Wells Fargo Bank, N.A. (as successor to National City Bank), as trustee, or another indenture to be entered into by us and Wells Fargo Bank, N.A. or another trustee. The unsecured subordinated debt securities will be issued under a separate indenture to be entered into by us and Wells Fargo Bank, N.A. or another trustee.

A copy of the May 3, 1996 senior debt indenture has been previously filed with the SEC and is incorporated by reference as an exhibit to the registration statement of which this prospectus is a part, and is incorporated by reference into this prospectus. Another form of senior debt indenture is filed as an exhibit to the registration statement of which this prospectus is a part and is incorporated by reference into this prospectus. A form of the subordinated debt indenture is filed as an exhibit to the registration statement of which this prospectus is a part and is incorporated by reference into this prospectus. You should refer to the applicable indenture for more specific information. In addition, you should consult the applicable prospectus supplement for particular terms of our debt securities. In this prospectus, we sometimes refer to the senior debt indentures and the subordinated debt indenture as the “indentures.”

The indentures will not limit the amount of debt securities that we may issue and will permit us to issue securities from time to time in one or more series. The debt securities will be unsecured obligations of Parker. We currently conduct a portion of our operations through subsidiaries, and the holders of debt securities (whether senior or subordinated debt securities) will be effectively subordinated to the creditors of our subsidiaries. This means that creditors of our subsidiaries will have a claim to the assets of our subsidiaries that is superior to the claim of our creditors, including holders of our debt securities.

Generally, we will pay the principal of, premium, if any, and interest on our registered debt securities either at an office or agency that we maintain for that purpose or, if we elect, we may pay interest by mailing a check to your address as it appears on our register (or, at the election of the holder, by wire transfer to an account designated by the holder). Except as may be provided otherwise in the applicable prospectus supplement, no payment on a bearer security will be made by mail to an address in the United States or by wire transfer to an account in the United States. Except as may be provided otherwise in the applicable prospectus supplement, we will issue our debt securities only in fully registered form without coupons, generally in denominations of $1,000 or integral multiples of $1,000. We will not apply a service charge for a transfer or exchange of our debt securities, but we may require that you pay the amount of any applicable tax or other governmental charge.

The applicable prospectus supplement will describe the following terms of any series of debt securities that we may offer:

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Debt securities may bear interest at fixed or floating rates. We may issue our debt securities at an original issue discount, bearing no interest or bearing interest at a rate that, at the time of issuance, is below market rate, to be sold at a substantial discount below their stated principal amount. Generally speaking, if our debt securities are issued at an original issue discount and there is an event of default or acceleration of their maturity, holders will receive an amount less than their principal amount. Tax and other special considerations applicable to any series of debt securities, including original issue discount debt, will be described in the prospectus supplement in which we offer those debt securities. In addition, certain U.S. federal income tax or other considerations, if any, applicable to any debt securities that are denominated in a currency or currency unit other than U.S. dollars may be described in the applicable prospectus supplement.

We will comply with Section 14(e) under the Exchange Act and any other tender offer rules under the Exchange Act that may then apply to any obligation we may have to purchase debt securities at the option of the holders. Any such obligation applicable to a series of debt securities will be described in the related prospectus supplement.

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Subordination of Subordinated Debt Securities

Debt securities of a series may be subordinated to senior indebtedness to the extent set forth in the prospectus supplement relating to the subordinated debt securities. The definition of “senior indebtedness” will include, among other things, senior debt securities and will be specifically set forth in that prospectus supplement.

Subordinated debt securities of a particular series and any coupons relating to those debt securities will be subordinate in right of payment, to the extent and in the manner set forth in the subordinated debt indenture and the prospectus supplement relating to those subordinated debt securities, to the prior payment of all of our indebtedness that is designated as senior indebtedness with respect to that series.

Upon any payment or distribution of our assets to creditors, upon a total or partial liquidation or dissolution of Parker or in a bankruptcy, receivership, or similar proceeding relating to Parker or our property, holders of senior indebtedness will be entitled to receive payment in full in cash before holders of subordinated debt securities will be entitled to receive any payment of principal, premium, if any, or interest with respect to the subordinated debt securities. Until the senior indebtedness is paid in full, any distribution to which holders of subordinated debt securities would otherwise be entitled will be made to the holders of senior indebtedness, except that holders of subordinated debt securities may receive distributions of shares of stock and any debt securities that are subordinated to senior indebtedness to at least the same extent as the subordinated debt securities, all as described in the applicable prospectus supplement.

Unless otherwise provided in an applicable prospectus supplement, we may not make any payments of principal, premium, if any, or interest with respect to subordinated debt securities, make any deposit for the purpose of defeasance of the subordinated debt securities, or repurchase, redeem, or otherwise retire, except, in the case of subordinated debt securities that provide for a mandatory sinking fund, by our delivery of subordinated debt securities to the trustee in satisfaction of our sinking fund obligation, any subordinated debt securities if:

Unless otherwise provided in an applicable prospectus supplement, during the continuance of any default (other than a default described in the preceding paragraph) with respect to any senior indebtedness pursuant to which the maturity of that senior indebtedness may be accelerated immediately without further notice (except such notice as may be required to effect the acceleration) or the expiration of any applicable grace periods, we may not pay the subordinated debt securities for such periods after notice of the default from the representative of specified senior indebtedness as shall be specified in the applicable prospectus supplement.

By reason of this subordination, in the event of insolvency, our creditors who are holders of senior indebtedness or holders of any indebtedness or serial preferred stock of our subsidiaries, as well as certain of our general creditors, may recover more, ratably, than the holders of the subordinated debt securities.

Events of Default

Unless otherwise provided in an applicable prospectus supplement, any of the following events will constitute an event of default for a series of debt securities under an indenture:

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An event of default with respect to one series of debt securities is not necessarily an event of default for another series.

If there is an event of default with respect to a series of our debt securities, which continues for the requisite amount of time, either the trustee or holders of at least 25% of the aggregate principal amount of that series may declare the principal amount of all of the debt securities of that series to be due and payable immediately. If the securities were issued at an original issue discount, less than the stated principal amount may become payable. After the declaration of acceleration of the maturity of the debt securities of any series, but before the trustee obtains a judgment or decree for payment of the money due, the holders of at least a majority in aggregate principal amount of the debt securities of that series may, on behalf of the holders of all debt securities and any related coupons of that series, rescind and annul the declaration of acceleration if we take specific evincing steps to cure the breach, as specified in the applicable indenture. In addition, the holders of at least a majority in aggregate principal amount of the debt securities of a series may, on behalf of the holders of all debt securities and any related coupons of that series, waive any past default with respect to the series and its consequences, except defaults in the payment of principal, premium, if any, or interest on the security or in respect of a covenant that cannot be modified or amended without the consent of the holder of each outstanding security of the affected series. Such a waiver causes the event of default to cease to exist and be deemed to have been cured.

Each indenture requires us to file annually with the trustee an officer’s certificate as to the absence of defaults under the terms of the respective indenture. Each indenture provides that if a default occurs with respect to debt securities of any series issued under such indenture, the trustee will give the holders of the relevant series notice of the default when, as and to the extent provided by the Trust Indenture Act of 1939. However, in the case of any default under any covenant with respect to the series, no notice of default to holders will be given until at least 30 days after the occurrence of the default.

Each indenture provides that the trustee will be under no obligation, subject to the duty of the trustee during the continuance of an event of default to act with the required standard of care, to exercise any of its rights or powers under the indenture at the request or direction of any of the holders, unless these holders shall have offered to the trustee reasonable security or indemnity. Subject to these provisions for indemnification of the trustee, the holders of a majority of the amount of the outstanding debt securities of any series will have the right to direct the time, manner and place of conducting any proceeding for any remedy available to the trustee, or exercising any trust or other power conferred on the trustee, with respect to the debt securities of that series.

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Satisfaction and Discharge of the Indentures

An indenture will generally cease to be of any further effect with respect to a series of debt securities if:

For the trustee to execute proper instruments acknowledging the satisfaction and discharge of an indenture in either case described above, we must also pay or cause to be paid all other sums payable under the applicable indenture by us, and deliver to the trustee an officer’s certificate and an opinion of counsel stating that all indenture conditions have been met.

Legal Defeasance and Covenant Defeasance

Any series of our debt securities may be subject to the defeasance and discharge provisions of the applicable indenture if so specified in the applicable prospectus supplement. If those provisions are applicable, we may elect either:

If we exercise our legal defeasance option with respect to a series of debt securities, payment of those debt securities may not be accelerated because of an event of default. If we exercise our covenant defeasance option with respect to a series of debt securities, payment of those debt securities may not be accelerated because of an event of default related to the specified covenants.

Unless otherwise provided in the applicable prospectus supplement, we may invoke legal defeasance or covenant defeasance with respect to any series of our debt securities only if:

which are sufficient to pay upon maturity or redemption, as the case may be, the principal of, premium, if any, and interest on those debt securities;

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Modification and Waiver

We may enter into supplemental indentures for the purpose of modifying or amending an indenture with the consent of holders of at least 662/3% in aggregate principal amount of each series of our outstanding debt securities affected. However, unless otherwise provided in the applicable prospectus supplement, the consent of all of the holders of our debt securities that are affected by any modification or amendment is required for any of the following:

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In addition, we and the trustee with respect to an indenture may enter into supplemental indentures without the consent of the holders of debt securities for one or more of the following purposes (in addition to any other purposes specified in an applicable prospectus supplement):

Certain Covenants

Except as may be provided otherwise in the applicable prospectus supplement, we will be bound by certain restrictions in connection with the issuance of debt securities. Unless otherwise described in a prospectus supplement relating to any debt securities, other than as described below under “— Restrictions on Secured Debt,” “— Restrictions on Sales and Leasebacks” and “— Consolidation, Merger and Sale of Assets,” the indentures do not contain any provisions that would limit our ability to incur indebtedness or that would afford holders of debt securities protection in the event of a sudden and significant decline in our credit quality or a takeover, recapitalization or highly leveraged or similar transaction involving us. Accordingly, we could in the future enter into transactions that could increase the amount of indebtedness outstanding at that time or otherwise affect our capital structure or credit rating. You should refer to the prospectus supplement relating to a particular series of debt securities for information about any deletions from, modifications of or additions to, the events of default or covenants of ours contained in an indenture, including any addition of a covenant or other provision providing event risk or similar protection.

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Certain Definitions

Unless otherwise provided in the applicable prospectus supplement, the following terms will mean as follows for purposes of covenants that may be applicable to any particular series of debt securities.

“Attributable Debt” means the total net amount of rent required to be paid during the remaining primary term of certain leases, discounted from the due date at a rate per annum equal to the weighted average yield to maturity of the debt securities calculated in accordance with generally accepted financial practices.

“Consolidated Net Tangible Assets” means the aggregate amount of assets, less applicable reserves and other properly deductible items, after deducting (i) all liabilities other than deferred income taxes, Funded Debt and shareholders’ equity and (ii) all goodwill and other intangibles of ours and our consolidated Subsidiaries computed in accordance with accounting principles generally accepted in the United States of America.

“Debt” means loans and notes, bonds, debentures or other similar evidences of indebtedness for money borrowed.

“Funded Debt” means (i) all indebtedness for money borrowed having a maturity of more than 12 months from the date as of which the determination is made or having a maturity of 12 months or less but by its terms being renewable or extendible beyond 12 months from such date at the option of the borrower and (ii) rental obligations payable more than 12 months from such date under leases which are capitalized in accordance with accounting principles generally accepted in the United States of America (such rental obligations to be included as Funded Debt at the amount so capitalized at the date of such computation and to be included for the purposes of the definition of Consolidated Net Tangible Assets both as an asset and as Funded Debt at the respective amounts so capitalized).

“Principal Property” means any manufacturing or processing plant or warehouse owned by us or any Restricted Subsidiary which is located within the United States and the gross book value of which (including related land, improvements, machinery and equipment without deduction of any depreciation reserves) on the date as of which the determination is being made, exceeds 1% of Consolidated Net Tangible Assets, with certain exceptions due to materiality to our business or to the use or operation of this property as determined by our board of directors.

“Restricted Subsidiary” means a Subsidiary of ours where substantially all the property is located, or substantially all of the business is carried on, within the United States and which owns a Principal Property.

“Subsidiary” means a corporation more than 50% of the outstanding voting stock of which is owned, directly or indirectly, by us and/or one or more of our Subsidiaries.

Restrictions on Secured Debt

Unless otherwise provided in the applicable prospectus supplement, we will not, and we will not permit any Restricted Subsidiary to, incur, issue, assume or guarantee any Debt secured by a pledge of, or mortgage or other lien on, any Principal Property or any shares of capital stock of, or Debt of, any Restricted Subsidiary (such pledges, mortgages and other liens being hereinafter called “Mortgage” or “Mortgages”), without providing that the debt securities are secured equally and ratably with (or, at our option, prior to) such secured Debt.

Unless otherwise provided in the applicable prospectus supplement, this obligation will not apply if, after giving effect to the secured Debt, the aggregate amount of all this Debt so secured together with all Attributable Debt of our and our Restricted Subsidiaries in respect of sale and leaseback transactions (other than sale and leaseback transactions described in “— Restrictions on Sales and Leasebacks”) involving Principal Properties, would not exceed 10% of Consolidated Net Tangible Assets.

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Unless otherwise provided in the applicable prospectus supplement, this obligation will not apply to, and there will be excluded in computing secured Debt for the purpose of the restriction, Debt secured by:

Restrictions on Sales and Leasebacks

Unless otherwise provided in the applicable prospectus supplement, neither we nor any of our Restricted Subsidiaries may enter into any sale and leaseback transaction involving any Principal Property, unless the aggregate amount of all Attributable Debt of us and our Restricted Subsidiaries with respect to this transaction plus all secured Debt would not exceed 10% of Consolidated Net Tangible Assets.

Unless otherwise provided in the applicable prospectus supplement, this obligation will not apply to, and there will be excluded in computing Attributable Debt for purposes of this restriction, any sale and leaseback transaction if:

In lieu of applying proceeds to the retirement of Funded Debt, we may surrender debentures or notes, including the debt securities, to the trustee for retirement and cancellation, or we or any Restricted Subsidiary may receive credit for the principal amount of Funded Debt voluntarily retired within 180 days after this sale.

This restriction will not apply to any sale and leaseback transaction between Parker and a Restricted Subsidiary or between Restricted Subsidiaries or involving the taking back of a lease for a period of three years or less.

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Consolidation, Merger and Sale of Assets

Unless otherwise provided in the applicable prospectus supplement, our indentures prohibit us from consolidating with or merging into another business entity, or transferring or leasing substantially all of our assets, unless:

The indenture further provides that no consolidation or merger of us with or into any other corporation and no conveyance, transfer or lease of our property substantially as an entirety to another person may be made if, as a result thereof, any Principal Property of ours or any of our Restricted Subsidiaries or any shares of capital stock or Debt of a Restricted Subsidiary would become subject to a Mortgage which is not expressly excluded from the restrictions or permitted by the indentures, unless the debt securities are secured equally and ratably with, or prior to, all indebtedness secured thereby.

Conversion or Exchange Rights

If debt securities of any series are convertible or exchangeable, the applicable prospectus supplement will specify:

Global Securities

Our debt securities may be issued in the form of one or more global securities that will be deposited with a depositary or its nominee identified in the applicable prospectus supplement. If so, each global security will be issued in the denomination of the aggregate principal amount of securities that it represents. Unless and until it is exchanged in whole or in part for debt securities that are in definitive registered form, a global security may not be transferred or exchanged except as a whole to the depositary, another nominee of the depositary, or a successor of the depositary or its nominee.

The specific material terms of the depositary arrangement with respect to any portion of a series of our debt securities that will be represented by a global security will be described in the applicable prospectus supplement. We anticipate that the following provisions will apply to our depositary arrangements.

Upon the issuance of any global security and its deposit with or on behalf of the depositary, the depositary will credit, on its book-entry registration and transfer system, the principal amounts of our debt securities represented by the global security to the accounts of participating institutions that have accounts with the depositary or its nominee. The underwriters or agents engaging in the distribution of our debt securities, or we, if we are offering and selling our debt securities directly, will designate the accounts to be credited. Ownership of beneficial interests in a global security will be limited to participating institutions or their clients. The depositary

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or its nominee will keep records of the ownership and transfer of beneficial interests in a global security by participating institutions. Participating institutions will keep records of the ownership and transfer of beneficial interests by their clients. The laws of some jurisdictions may require that purchasers of our securities receive physical certificates, which may impair a holder’s ability to transfer its beneficial interests in global securities.

While the depositary or its nominee is the registered owner of a global security, the depositary or its nominee will be considered the sole owner of all of our debt securities represented by the global security for all purposes under the indentures. Generally, if a holder owns beneficial interests in a global security, that holder will not be entitled to have our debt securities registered in that holder’s own name, and that holder will not be entitled to receive a certificate representing that holder’s ownership. Accordingly, if a holder owns a beneficial interest in a global security, the holder must rely on the depositary and, if applicable, the participating institution of which that holder is a client to exercise the rights of that holder under the applicable indenture.

The depositary may grant proxies and otherwise authorize participating institutions to take any action that a holder is entitled to take under an indenture. We understand that, according to existing industry practices, if we request any action of holders, or any owner of a beneficial interest in a global security wishes to give any notice or take any action, the depositary would authorize the participating institutions to give the notice or take the action, and the participating institutions would in turn authorize their clients to give the notice or take the action.

Generally, we will make payments on our debt securities represented by a global security directly to the depositary or its nominee. It is our understanding that the depositary will then credit the accounts of participating institutions, which will then distribute funds to their clients. We also expect that payments by participating institutions to their clients will be governed by standing instructions and customary practices, as is now the case with securities held for the accounts of clients registered in “street names,” and will be the responsibility of the participating institutions. Neither we nor the trustee, nor our respective agents, will have any responsibility, or bear any liability, for any aspects of the records relating to or payments made on account of beneficial interests in a global security, or for maintaining, supervising or reviewing records relating to beneficial interests.

Generally, a global security may be exchanged for certificated debt securities only in the following instances:

Neither we nor the trustee will have any responsibility or liability for any aspect of the records relating to, or payments made on account of, beneficial ownership interests in a debt security; for maintaining, supervising or reviewing any records relating to such beneficial ownership interests; or for any other aspect of the relationship between The Depository Trust Company, or DTC, and its participants or the relationship between such participants and the beneficial owners of interests in a debt security.

Neither we nor the trustee will be liable for any delay by DTC, its nominee or any direct or indirect participant in identifying the beneficial owners of the debt securities. We and the trustee may conclusively rely on, and will be protected in relying on, instructions from DTC or its nominee for all purposes, including with respect to the registration and delivery, and the respective principal amounts, of the certificated debt securities to be issued.

One fully-registered global security will be issued for each issue of debt securities, each in the aggregate principal amount of such issue, and will be deposited with DTC. If, however, the aggregate principal amount of any issue exceeds $500 million, one certificate will be issued with respect to each $500 million of principal amount, and an additional certificate will be issued with respect to any remaining principal amount of such issue.

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The following information concerning DTC and DTC’s book-entry system has been obtained from sources that we believe to be reliable, but we take no responsibility for the accuracy or completeness thereof.

Unless otherwise specified in the applicable prospectus supplement, DTC will act as the depositary for securities issued in the form of global securities. Global securities will be issued as fully-registered securities registered in the name of Cede & Co., which is DTC’s partnership nominee, or such other name as may be requested by an authorized representative of DTC.

DTC is a limited-purpose trust company organized under the New York Banking Law, a “banking organization” within the meaning of the New York Banking Law, a member of the Federal Reserve System, a “clearing corporation” within the meaning of the New York Uniform Commercial Code and a “clearing agency” registered pursuant to the provisions of Section 17A of the Exchange Act. DTC holds and provides asset servicing for U.S. and non-U.S. equity issues, corporate and municipal debt issues and money market instruments from countries that DTC’s participants, referred to herein as direct participants, deposit with DTC. DTC also facilitates the post-trade settlement among direct participants of sales and other securities transactions in deposited securities, through electronic computerized book-entry transfers and pledges between direct participants’ accounts. This eliminates the need for physical movement of securities certificates. Direct participants include both U.S. and non-U.S. securities brokers and dealers, banks, trust companies, clearing corporations and certain other organizations. DTC is a wholly-owned subsidiary of The Depository Trust & Clearing Corporation, or DTCC. DTCC is owned by the users of its regulated subsidiaries. Access to the DTC system is also available to others such as both U.S. and non-U.S. securities brokers and dealers, banks, trust companies and clearing corporations that clear through or maintain a custodial relationship with a direct participant, either directly or indirectly, referred to herein as indirect participants. The DTC Rules applicable to its participants are on file with the Securities and Exchange Commission. More information about DTC can be found at www.dtcc.com and www.dtc.org. Information on or accessible through such websites is not part of, or incorporated by reference into, this prospectus.

Purchases of debt securities under the DTC system must be made by or through direct participants, which will receive a credit for the debt securities on DTC’s records. The ownership interest of each actual purchaser of each debt security, or the beneficial owner, is in turn to be recorded on the direct and indirect participants’ records. Beneficial owners will not receive written confirmation from DTC of their purchase. Beneficial owners are, however, expected to receive written confirmations providing details of the transaction, as well as periodic statements of their holdings, from the direct or indirect participant through which the beneficial owner entered into the transaction. Transfers of ownership interests in debt securities are to be accomplished by entries made on the books of direct and indirect participants acting on behalf of beneficial owners. Beneficial owners will not receive certificates representing their ownership interests in the debt securities, except in the event that use of the book-entry system for the debt securities is discontinued.

To facilitate subsequent transfers, all debt securities deposited by direct participants with DTC are registered in the name of DTC’s partnership nominee, Cede & Co., or such other name as may be requested by an authorized representative of DTC. The deposit of debt securities with DTC and their registration in the name of Cede & Co. or such other DTC nominee do not effect any change in beneficial ownership. DTC has no knowledge of the actual beneficial owners of the debt securities; DTC’s records reflect only the identity of the direct participants to whose accounts such debt securities are credited, which may or may not be the beneficial owners. The direct and indirect participants will remain responsible for keeping account of their holdings on behalf of their customers.

Conveyance of notices and other communications by DTC to direct participants, by direct participants to indirect participants and by direct participants and indirect participants to beneficial owners will be governed by arrangements among them, subject to any statutory or regulatory requirements as may be in effect from time to time. Beneficial owners of debt securities may wish to take certain steps to augment the transmission to them of notices of significant events with respect to the debt securities, such as redemptions, tenders, defaults and

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proposed amendments to the debt security documents. For example, beneficial owners of debt securities may wish to ascertain that the nominee holding the debt securities for their benefit has agreed to obtain and transmit notices to beneficial owners. In the alternative, beneficial owners may wish to provide their names and addresses to the registrar and request that copies of notices be provided directly to them.

Redemption notices will be sent to DTC. If less than all of the debt securities within an issue are being redeemed, DTC’s practice is to determine by lot the amount of the interest of each direct participant in such issue to be redeemed.

Neither DTC nor Cede & Co. (nor any other DTC nominee) will consent or vote with respect to the debt securities unless authorized by a direct participant in accordance with DTC’s procedures. Under its usual procedures, DTC mails an omnibus proxy to us as soon as possible after the record date. The omnibus proxy assigns Cede & Co.’s consenting or voting rights to those direct participants to whose accounts debt securities are credited on the record date (identified in a listing attached to the omnibus proxy).

Redemption proceeds, distributions and payments on the debt securities will be made to Cede & Co., or such other nominee as may be requested by an authorized representative of DTC. DTC’s practice is to credit direct participants’ accounts upon DTC’s receipt of funds and corresponding detail information from us or our agent, on the date payable in accordance with their respective holdings shown on DTC’s records. Payments by participants to beneficial owners will be governed by standing instructions and customary practices, as is the case with securities held for the accounts of customers registered in “street name,” and will be the responsibility of such participant and not of DTC (or its nominee), our agent or us, subject to any statutory or regulatory requirements as may be in effect from time to time. Payment of redemption proceeds, distributions and dividend payments to Cede & Co. (or such other nominee as may be requested by an authorized representative of DTC) is the responsibility of us or our agent. Disbursement of such payments to direct participants will be the responsibility of DTC, and disbursement of such payments to the beneficial owners will be the responsibility of direct and indirect participants.

DTC may discontinue providing its services as depository with respect to the debt securities at any time by giving reasonable notice to us or our agent. Under such circumstances, in the event that a successor depository is not obtained, certificates for the debt certificates are required to be printed and delivered. In addition, we may decide to discontinue use of the system of book-entry-only transfers through DTC (or a successor securities depository). In that event, certificates for the debt securities will be printed and delivered to DTC.

Debt securities may be issued as registered securities, which will be registered as to principal and interest in the register maintained by the registrar for those debt securities, or bearer securities, which will be transferable only by delivery. If debt securities are issuable as bearer securities, certain special limitations and considerations will apply, as set forth in the applicable prospectus supplement.

Our Senior Debt Trustee and Subordinated Debt Trustee

The current trustee for our senior debt securities is Wells Fargo Bank, N.A., which performs services for us in the ordinary course of business. In addition, the unsecured subordinated debt securities will be issued under a separate indenture to be entered into by us and Wells Fargo Bank, N.A., as trustee, or another trustee. Wells Fargo Bank, N.A. acts as a depositary for funds of, performs certain other services for, and transacts other banking business with us and certain of our subsidiaries in the normal course of its business. Wells Fargo Bank, N.A. is a participating lender under our current U.S. credit facility. We may engage additional or substitute trustees with respect to particular series of our debt securities.

Governing Law

The indentures and the debt securities will be governed by the laws of the State of New York.

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DESCRIPTION OF CAPITAL STOCK

Capitalization

Our authorized capital stock consists of 603,000,000 shares of stock, including:

Common Shares

This section describes the general terms of our common shares. For more detailed information, you should refer to our amended articles of incorporation and amended code of regulations, copies of which have been filed with the SEC. These documents are also incorporated by reference into this prospectus.

Holders of our common shares are entitled to one vote per share with respect to each matter submitted to a vote of our shareholders, subject to voting rights of shares of our serial preferred stock, if any. Except as provided in connection with our serial preferred stock or as otherwise may be required by law or our amended articles of incorporation, our common shares are the only capital stock entitled to vote in the election of directors.

Shareholders of Parker have cumulative voting rights in the election of directors if any shareholder gives notice in writing to the president or a vice president or the secretary of Parker not less than 48 hours before the time fixed for holding the meeting that cumulative voting at this election is desired and an announcement of the giving of this notice is made upon the convening of the meeting by the chairman or the secretary or by or on behalf of the shareholder giving the notice. In this event, each shareholder has the right to cumulate votes and give one nominee the number of votes equal to the number of directors to be elected multiplied by the number of votes to which the shareholder is entitled, or to distribute votes on the same principle among two or more nominees, as the shareholder sees fit.

Subject to the rights of holders of our serial preferred stock, if any, holders of our common shares are entitled to receive dividends and distributions lawfully declared by our board of directors. If we liquidate, dissolve or wind up our business, whether voluntarily or involuntarily, holders of our common shares will be entitled to receive any assets available for distribution to our shareholders after we have paid or set apart for payment the amounts necessary to satisfy any preferential or participating rights to which the holders of each outstanding series of serial preferred stock are entitled by the express terms of that series of serial preferred stock.

Our outstanding common shares are fully paid and nonassessable. Our common shares do not have any preemptive, subscription or conversion rights. We may issue additional authorized common shares as it is authorized by our board of directors from time to time, without shareholder approval, except as may be required by applicable stock exchange requirements. In addition, attached to each of our common shares is one common share purchase right. See “— Rights Agreement” below for a summary discussion of these rights.

Serial Preferred Stock

This section describes the general terms and provisions of our serial preferred stock. The applicable prospectus supplement will describe the specific terms of the shares of serial preferred stock offered through that prospectus supplement, as well as any general terms described in this section that will not apply to those shares of serial preferred stock. We will file a copy of the amendment to our amended articles of incorporation that contains the terms of each new series of serial preferred stock with the SEC each time we issue a new series of serial preferred stock. This amendment will establish the number of shares included in a designated series and fix the designation, powers, privileges, preferences and rights of the shares of each series as well as any applicable qualifications, limitations or restrictions. You should refer to the applicable amended articles of incorporation before deciding to buy shares of our serial preferred stock as described in the applicable prospectus supplement.

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Our board of directors has been authorized to provide for the issuance of shares of our serial preferred stock in multiple series without the approval of shareholders. With respect to each series of our serial preferred stock, our board of directors has the authority, consistent with our amended articles of incorporation, to fix the following terms:

Dividends in respect of the serial preferred stock will be cumulative and payable quarterly in cash. Holders of serial preferred stock are entitled to one vote for each share of serial preferred stock on all matters presented to shareholders and vote, in general, together with common shares as one class. In the event of a default in the payment of dividends (whether or not declared) in an aggregate amount equivalent to six quarterly dividends (whether or not consecutive), the holders of serial preferred stock, voting as a separate class, have the right to elect two additional directors on Parker’s board of directors. In addition, the holders of serial preferred stock have supermajority voting rights in regard to changes to our amended articles of incorporation or amended code of regulations adversely affecting the voting powers, rights or preferences of this serial preferred stock.

Your rights with respect to your shares of the serial preferred stock will be subordinate to the rights of our general creditors. Shares of our serial preferred stock that we issue will be fully paid and nonassessable, and will not be entitled to preemptive rights unless specified in the applicable prospectus supplement.

The description of our board of director’s powers with respect to serial preferred stock and your rights as a serial preferred stock shareholder in this section does not describe every aspect of these powers and rights. A copy of our amended articles of incorporation has been incorporated by reference in the registration statement of which this prospectus is a part. See “Where You Can Find More Information” for information on how to obtain a copy.

Rights Agreement

Attached to each of our common shares is one common share purchase right. Each right entitles the registered holder to purchase from us one common share, par value $.50 per share, at a price of $160.00 per common share, subject to adjustment. The rights expire on February 17, 2017 unless the final expiration date is extended or unless the rights are earlier redeemed or exchanged by us.

The rights are represented by the certificates for our common shares (or, if the common shares shall be uncertificated, by the registration of the associated common shares on our stock transfer books and our confirmation thereof), are not exercisable, and are not separately transferable from the common shares, until the earlier of:

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Generally, in the event that a person or group becomes an acquiring person, each right, other than the rights owned by the acquiring person, will entitle the holder to receive, upon exercise of the right, common shares having a value equal to two times the exercise price of the right. In the event that we are acquired in a merger, consolidation or other business combination transaction or more than 50% of our assets, cash flow or earning power is sold or transferred, each right, other than the rights owned by an acquiring person, will entitle the holder to receive, upon the exercise of the right, common shares of the surviving corporation having a value equal to two times the exercise price of the right.

At any time on or after the flip-in date, the board of directors may exchange the rights, other than rights owned by the acquiring person, which would have become void, in whole or in part, at an exchange ratio of one common share per right, subject to adjustment.

The rights are redeemable in whole, but not in part, at $0.01 per right until a flip-in date occurs. The ability to exercise the rights terminates at the time that the board of directors elects to redeem or exchange the rights. At no time will the rights have any voting rights.

The number of outstanding rights, the exercise price payable, and the number of common shares issuable upon exercise of the rights are subject to customary adjustments from time to time to prevent dilution.

The rights have certain anti-takeover effects. The rights may cause substantial dilution to a person or group that attempts to acquire beneficial ownership of more than 15% of our outstanding shares on terms not approved by our board of directors. The rights should not interfere with any merger or other business combination that our board of directors approves.

The description of the rights contained in this section does not describe every aspect of the rights. The rights agreement dated as of February 8, 2007 and amended as of July 6, 2009, as it may be further amended from time to time, between us and the rights agent, contains the full legal text of the matters described in this section. A copy of the rights agreement and the amendment thereto have been incorporated by reference in the registration statement of which this prospectus forms a part. See “Where You Can Find More Information” for information on how to obtain a copy.

Limitation on Directors’ Liability

Under Section 1701.59(D) of the Ohio Revised Code, unless the articles or the regulations of a corporation state by specific reference that this provision of Ohio law does not apply, a director is liable for monetary damages for any action or omission as a director only if it is proven by clear and convincing evidence that this act or omission was undertaken either with deliberate intent to cause injury to the corporation or with reckless disregard for the best interests of the corporation. This provision, however, does not affect the liability of directors under Section 1701.95 of the Ohio Revised Code, which relates to:

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Section 1701.59(D) applies to our board of directors because our amended articles of incorporation and amended code of regulations do not specifically exclude its applicability. This may have the effect of reducing the likelihood of derivative litigation against directors, and may discourage or deter shareholders or management from bringing a lawsuit against directors based on their actions or omissions, even though such a lawsuit, if successful, might otherwise have benefited us and our shareholders.

Ohio Anti-Takeover Law

Several provisions of the Ohio Revised Code may make it more difficult to acquire us by means of a tender offer, open market purchase, proxy fight or otherwise. These provisions include Section 1701.831 (Control Share Acquisitions), Chapter 1704 (Business Combinations) and Section 1707.041 (Control Bids).

These statutory provisions are designed to encourage persons seeking to acquire control of us to negotiate with our board of directors. We believe that, as a general rule, our interests and the interests of our shareholders would be served best if any change in control results from negotiations with our board of directors based upon careful consideration of the proposed terms, such as, among other factors, the price to be paid to shareholders, the form of consideration to be paid and the anticipated tax effects of the transaction.

These statutory provisions could have the effect of discouraging a prospective acquirer from making a tender offer for our shares or otherwise attempting to obtain control of us. To the extent that these provisions discourage takeover attempts, they could deprive shareholders of opportunities to realize takeover premiums for their shares. Moreover, these provisions could discourage accumulations of large blocks of common shares, thus depriving shareholders of any advantages which large accumulations of stock might provide. Finally, these provisions could limit the ability of shareholders to approve a transaction that they may deem to be in their best interests.

The Ohio Revised Code’s Control Share Acquisition, Business Combination and Control Bids provisions are set forth in summary below. This summary does not purport to be complete and is subject to, and is qualified in its entirety by reference to, all sections of the Ohio Revised Code.

Control Share Acquisitions

Section 1701.831 of the Ohio Revised Code provides that certain notice and informational filings and special shareholder meeting and voting procedures must be followed prior to consummation of a proposed “control share acquisition.” The Ohio Revised Code defines a “control share acquisition” as any acquisition of an issuer’s shares which would entitle the acquirer, immediately after that acquisition, directly or indirectly, to exercise or direct the exercise of voting power of the issuer in the election of directors within any one of the following ranges of that voting power:

Assuming compliance with the notice and information filings prescribed by the statute, the proposed control share acquisition may be made only if, at a special meeting of shareholders, the acquisition is approved by at least a majority of the voting power of the issuer represented at the meeting and at least a majority of the voting power remaining after excluding the combined voting power of the “interested shares.” “Interested shares” are the shares held by the intended acquirer and the employee-directors and officers of the issuer, as well as certain shares that were acquired after the date of the first public disclosure of the acquisition but before the record date for the meeting of shareholders and shares that were transferred, together with the voting power thereof, after the record date for the meeting of shareholders.

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Business Combinations

We are subject to Chapter 1704 of the Ohio Revised Code, which prohibits certain business combinations and transactions between an “issuing public corporation” and an “interested shareholder” for at least three years after the interested shareholder attains 10% ownership of the issuing public corporation, unless the board of directors of the issuing public corporation approves the transaction prior to the interested shareholder attaining such 10% ownership. An “issuing public corporation” is an Ohio corporation with 50 or more shareholders that has its principal place of business, principal executive offices, or substantial assets within the State of Ohio, and as to which no close corporation agreement exists. An “interested shareholder” is a beneficial owner of 10% or more of the shares of a corporation. Examples of transactions regulated by Chapter 1704 include the disposition of assets, mergers and consolidations, voluntary dissolutions, and the transfer of shares.

Subsequent to the three-year period, a transaction subject to Chapter 1704 may take place provided that certain conditions are satisfied, including:

Control Bids

Section 1707.041 of the Ohio Revised Code regulates certain “control bids” for corporations in Ohio with certain concentrations of Ohio shareholders and permits the Ohio Division of Securities to suspend a control bid if certain information is not provided to offerees, the subject corporation and the Ohio Division of Securities. Control bids include the purchase or offer to purchase any equity security of such a corporation from a resident of Ohio if, after the purchase of that security, the offeror would be directly or indirectly the beneficial owner of more than 10% of any class of issued and outstanding equity securities of the corporation. Information that must be provided in connection with a control bid includes a statement of any plans or proposals that the offeror, upon gaining control, may have to liquidate the subject corporation, sell its assets, effect a merger or consolidation of the corporation, establish, terminate, convert, or amend employee benefit plans, close any plant or facility of the subject corporation or of any of its subsidiaries or affiliates, change or reduce its work force or the work force of any of its subsidiaries or affiliates, or make any other major change in the corporation’s business, corporate structure, management personnel or policies of employment.

Special Charter and Regulations Provisions

Our amended articles of incorporation contain a “fair price” provision that applies to certain business combination transactions involving any person or group that beneficially owns at least 20% of the aggregate voting power of our outstanding capital stock, referred to as an “interested party.” The provision requires the affirmative vote of the holders of at least 80% of our voting stock to approve certain business combination transactions between the interested party and us or our subsidiaries, including:

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The 80% voting requirement will not apply if:

This provision could have the effect of delaying or preventing a change in control in a transaction or series of transactions not satisfying the “fair price” criteria.

The “fair price” provision may be amended only by the affirmative vote of the holders of at least 80% of the aggregate voting power of our outstanding capital stock, unless two-thirds of the continuing directors recommends such a change.

The foregoing provisions of our amended articles of incorporation and amended code of regulations, together with the rights agreement and the provisions of the Ohio antitakeover laws (Section 1701.831, Chapter 1704 and Section 1707.041 of the Ohio Revised Code), could have the effect of delaying, deferring or preventing a change in control or the removal of existing management, of deterring potential acquirors from making an offer to our shareholders and of limiting any opportunity to realize premiums over prevailing market prices for our common shares in connection therewith. This could be the case notwithstanding that a majority of our shareholders might benefit from this change in control or offer.

Transfer Agent and Registrar

Wells Fargo Bank, N.A. serves as the registrar and transfer agent for our common shares.

Stock Exchange Listing

Our common shares are listed on the New York Stock Exchange. The trading symbol for our common shares on this exchange is “PH.”

DESCRIPTION OF DEPOSITARY SHARES

General

We may offer fractional shares of serial preferred stock, rather than full shares of serial preferred stock. If we do so, we may issue receipts for depositary shares that each represent a fraction of a share of a particular series of serial preferred stock. The prospectus supplement will indicate that fraction. The shares of serial preferred stock represented by depositary shares will be deposited under a depositary agreement between us and a bank or trust company that meets certain requirements and is selected by us (the “Bank Depositary”). Each

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owner of a depositary share will be entitled to all the rights and preferences of the serial preferred stock represented by the depositary share. The depositary shares will be evidenced by depositary receipts issued pursuant to the depositary agreement. Depositary receipts will be distributed to those persons purchasing the fractional shares of serial preferred stock in accordance with the terms of the offering.

We have summarized some common provisions of a depositary agreement and the related depositary receipts. The forms of the depositary agreement and the depositary receipts relating to any particular issue of depositary shares will be filed with the SEC each time we issue depositary shares, and you should read those documents for provisions that may be important to you.

Dividends and Other Distributions

If we pay a cash distribution or dividend on a series of serial preferred stock represented by depositary shares, the Bank Depositary will distribute these dividends to the record holders of these depositary shares. If the distributions are in property other than cash, the Bank Depositary will distribute the property to the record holders of the depositary shares. However, if the Bank Depositary determines that it is not feasible to make the distribution of property, the Bank Depositary may, with our approval, sell this property and distribute the net proceeds from this sale to the record holders of the depositary shares.

Redemption of Depositary Shares

If we redeem a series of serial preferred stock represented by depositary shares, the Bank Depositary will redeem the depositary shares from the proceeds received by the Bank Depositary in connection with the redemption. The redemption price per depositary share will equal the applicable fraction of the redemption price per share of the serial preferred stock. If fewer than all the depositary shares are redeemed, the depositary shares to be redeemed will be selected by lot or pro rata as the Bank Depositary may determine.

Voting the Serial Preferred Stock

Upon receipt of notice of any meeting at which the holders of the serial preferred stock represented by depositary shares are entitled to vote, the Bank Depositary will mail the notice to the record holders of the depositary shares relating to this serial preferred stock. Each record holder of these depositary shares on the record date (which will be the same date as the record date for the serial preferred stock) may instruct the Bank Depositary as to how to vote the serial preferred stock represented by that holder’s depositary shares. The Bank Depositary will endeavor, insofar as practicable, to vote the amount of the serial preferred stock represented by such depositary shares in accordance with these instructions, and we will take all action which the Bank Depositary deems necessary in order to enable the Bank Depositary to do so. The Bank Depositary will abstain from voting shares of the serial preferred stock to the extent it does not receive specific instructions from the holders of depositary shares representing this serial preferred stock.

Amendment and Termination of the Depositary Agreement

The form of depositary receipt evidencing the depositary shares and any provision of the depositary agreement may be amended by agreement between the Bank Depositary and us. However, any amendment that materially and adversely alters the rights of the holders of depositary shares will not be effective unless this amendment has been approved by the holders of at least a majority of the depositary shares then outstanding. The depositary agreement may be terminated by the Bank Depositary or us only if:

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Charges of Bank Depositary

We will pay all transfer and other taxes and governmental charges arising solely from the existence of the depositary arrangements. We will pay charges of the Bank Depositary in connection with the initial deposit of the serial preferred stock and any redemption of the serial preferred stock. Holders of depositary receipts will pay other transfer and other taxes and governmental charges and any other charges, including a fee for the withdrawal of shares of serial preferred stock upon surrender of depositary receipts, as may be expressly provided in the depositary agreement related to their accounts.

Withdrawal of Serial Preferred Stock

Except as may be provided otherwise in the applicable prospectus supplement, upon surrender of depositary receipts at the principal office of the Bank Depositary, subject to the terms of the depositary agreement, the owner of the depositary shares may demand delivery of the number of whole shares of serial preferred stock and all money and other property, if any, represented by those depositary shares. Fractional shares of serial preferred stock will not be issued. If the depositary receipts delivered by the holder evidence a number of depositary shares in excess of the number of depositary shares representing the number of whole shares of serial preferred stock to be withdrawn, the Bank Depositary will deliver to this holder at the same time a new depositary receipt evidencing the excess number of depositary shares. Holders of serial preferred stock thus withdrawn may not thereafter deposit those shares under the depositary agreement or receive depositary receipts evidencing depositary shares therefor.

Miscellaneous

The Bank Depositary will forward to holders of depositary receipts all reports and communications from us that are delivered to the Bank Depositary and that we are required to furnish to the holders of serial preferred stock.

Neither the Bank Depositary nor we will be liable if we are prevented or delayed by law or any circumstance beyond our control in performing our obligations under the depositary agreement. The obligations of the Bank Depositary and us under the depositary agreement will be limited to performance in good faith of our duties thereunder, and we will not be obligated to prosecute or defend any legal proceeding in respect of any depositary shares or serial preferred stock unless satisfactory indemnity is furnished. We may rely upon written advice of counsel or accountants, or upon information provided by persons presenting serial preferred stock for deposit, holders of depositary receipts or other persons believed to be competent and on documents believed to be genuine.

Resignation and Removal of Bank Depositary

The Bank Depositary may resign at any time by delivering to us notice of its election to do so, and we may at any time remove the Bank Depositary. Any such resignation or removal will take effect upon the appointment of a successor Bank Depositary and the successor’s acceptance of this appointment. The successor Bank Depositary must be appointed within 60 days after delivery of the notice of resignation or removal and must be a bank or trust company meeting the requirements of the depositary agreement.

DESCRIPTION OF WARRANTS

General Description of Warrants

We may issue warrants for the purchase of debt securities, serial preferred stock or common shares. Warrants may be issued independently or together with other securities and may be attached to or separate from any offered securities. Each series of warrants will be issued under a separate warrant agreement to be entered

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into between us and a bank or trust company, as warrant agent. The warrant agent will act solely as our agent in connection with the warrants and will not have any obligation or relationship of agency or trust for or with any holders or beneficial owners of warrants. A copy of the warrant agreement will be filed with the SEC in connection with the offering of warrants.

Debt Warrants

The prospectus supplement relating to a particular issue of warrants to issue debt securities will describe the terms of those warrants, including the following:

Stock Warrants

The prospectus supplement relating to a particular issue of warrants to issue common shares or serial preferred stock will describe the terms of the common share warrants and serial preferred stock warrants, including the following:

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Exercise of Warrants

Each warrant will entitle the holder of the warrant to purchase at the exercise price set forth in the applicable prospectus supplement the principal amount of debt securities or common shares or shares of serial preferred stock being offered. Holders may exercise warrants at any time up to the close of business on the expiration date set forth in the applicable prospectus supplement. After the close of business on the expiration date, unexercised warrants are void. Holders may exercise warrants as set forth in the prospectus supplement relating to the warrants being offered.

Until a holder exercises the warrants to purchase our debt securities, serial preferred stock or common shares, the holder will not have any rights as a holder of our debt securities, serial preferred stock or common shares, as the case may be, by virtue of ownership of warrants.

DESCRIPTION OF STOCK PURCHASE CONTRACTS AND STOCK PURCHASE UNITS

We may issue stock purchase contracts, including contracts obligating holders to purchase from us, and obligating us to sell to the holders, a specified number of common shares or other securities at a future date or dates, which we refer to in this prospectus as “stock purchase contracts.” The price per share of the securities and the number of shares of the securities may be fixed at the time the stock purchase contracts are issued or may be determined by reference to a specific formula set forth in the stock purchase contracts. The stock purchase contracts may be issued separately or as part of units consisting of a stock purchase contract and debt securities, preferred securities, warrants or debt obligations of third parties, including U.S. treasury securities, securing the holders’ obligations to purchase the securities under the stock purchase contracts, which we refer to herein as “stock purchase units.” The stock purchase contracts may require holders to secure their obligations under the stock purchase contracts in a specified manner. The stock purchase contracts also may require us to make periodic payments to the holders of the stock purchase units or vice versa, and those payments may be unsecured or refunded on some basis.

The applicable prospectus supplement will describe the terms of the stock purchase contracts or stock purchase units. The description in the prospectus supplement will not necessarily be complete, and reference will

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be made to the stock purchase contracts, and, if applicable, collateral or depositary arrangements, relating to the stock purchase contracts or stock purchase units, which will be filed with the SEC each time we issue stock purchase contracts or stock purchase units. U.S. federal income tax considerations applicable to the stock purchase units and the stock purchase contracts will also be discussed in the applicable prospectus supplement.

PLAN OF DISTRIBUTION

We may sell the offered securities in and outside the United States:

We may sell the securities from time to time:

The prospectus supplement will include the following information:

Sale Through Underwriters or Dealers

If underwriters are used in the sale, the underwriters will acquire the securities for their own account. The underwriters may resell the securities from time to time in one or more transactions, including negotiated transactions, at a fixed public offering price or at varying prices determined at the time of sale. Underwriters may offer securities to the public either through underwriting syndicates represented by one or more managing underwriters or directly by one or more firms acting as underwriters. Unless we inform you otherwise in the prospectus supplement, the obligations of the underwriters to purchase the securities will be subject to certain

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conditions, and the underwriters will be obligated to purchase all the offered securities if they purchase any of them. The underwriters may change from time to time any initial public offering price and any discounts or concessions allowed or reallowed or paid to dealers.

If we offer securities in a subscription rights offering to our existing security holders, we may enter into a standby underwriting agreement with dealers, acting as standby underwriters. We may pay the standby underwriters a commitment fee for the securities they commit to purchase on a standby basis. If we do not enter into a standby underwriting agreement, we may retain a dealer-manager to manage a subscription rights offering for us.

During and after an offering through underwriters, the underwriters may purchase and sell the securities in the open market. These transactions may include overallotment and stabilizing transactions and purchases to cover syndicate short positions created in connection with the offering. The underwriters may also impose a penalty bid, which means that selling concessions allowed to syndicate members or other broker-dealers for the offered securities sold for their account may be reclaimed by the syndicate if the offered securities are repurchased by the syndicate in stabilizing or covering transactions. These activities may stabilize, maintain or otherwise affect the market price of the offered securities, which may be higher than the price that might otherwise prevail in the open market. If commenced, the underwriters may discontinue these activities at any time.

Some or all of the securities that we offer though this prospectus may be new issues of securities with no established trading market. Any underwriters to whom we sell our securities for public offering and sale may make a market in those securities, but they will not be obligated to do so and they may discontinue any market making at any time without notice. Accordingly, we cannot assure you of the liquidity of, or continued trading markets for, any securities that we offer.

If dealers are used in the sale of securities, we will sell the securities to them as principals. They may then resell those securities to the public at varying prices determined by the dealers at the time of resale. We will include in the prospectus supplement the names of the dealers and the terms of the transaction.

Direct Sales and Sales Through Agents

We may sell the securities directly. In this case, no underwriters or agents would be involved. We may also sell the securities through agents designated from time to time. In the prospectus supplement, we will name any agent involved in the offer or sale of the offered securities, and we will describe any commissions payable to the agent. Unless we inform you otherwise in the applicable prospectus supplement, any agent will agree to use its reasonable best efforts to solicit purchases for the period of its appointment.

We may sell the securities directly to institutional investors or others who may be deemed to be underwriters within the meaning of the Securities Act with respect to any sale of those securities. We will describe the terms of any sales of these securities in the applicable prospectus supplement.

Remarketing Arrangements

Offered securities may also be offered and sold, if so indicated in the applicable prospectus supplement, in connection with a remarketing upon their purchase, in accordance with a redemption or repayment pursuant to their terms, or otherwise, by one or more remarketing firms, acting as principals for their own accounts or as agents for us. Any remarketing firm will be identified and the terms of its agreements, if any, with us and its compensation will be described in the applicable prospectus supplement.

Delayed Delivery Contracts

If we so indicate in the applicable prospectus supplement, we may authorize agents, underwriters or dealers to solicit offers from certain types of institutions to purchase securities from us or the trusts at the public offering

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price under delayed delivery contracts. These contracts would provide for payment and delivery on a specified date in the future. The contracts would be subject only to those conditions described in the prospectus supplement. The applicable prospectus supplement will describe the commission payable for solicitation of those contracts.

Derivative Transactions and Hedging

We, the underwriters or other agents may engage in derivative transactions involving the securities. These derivatives may consist of short sale transactions and other hedging activities. The underwriters or agents may acquire a long or short position in the securities, hold or resell securities acquired and purchase options or futures on the securities and other derivative instruments with returns linked to or related to changes in the price of the securities. In order to facilitate these derivative transactions, we may enter into security lending or repurchase agreements with the underwriters or agents. The underwriters or agents may effect the derivative transactions through sales of the securities to the public, including short sales, or by lending the securities in order to facilitate short sale transactions by others. The underwriters or agents may also use the securities purchased or borrowed from us or others (or, in the case of derivatives, securities received from us in settlement of those derivatives) to directly or indirectly settle sales of the securities or close out any related open borrowings of the securities.

General Information

We may have agreements with the agents, dealers, underwriters and remarketing firms to indemnify them against certain civil liabilities, including liabilities under the Securities Act, or to contribute with respect to payments that the agents, dealers, underwriters or remarketing firms may be required to make. Agents, dealers, underwriters and remarketing firms may be customers of, engage in transactions with or perform services for us in the ordinary course of their businesses.

LEGAL MATTERS

Unless otherwise provided in the applicable prospectus supplement, Jones Day will pass upon the validity of our debt securities, common shares, serial preferred stock, depositary shares, warrants, stock purchase contracts and stock purchase units. Any underwriters may also be advised about the validity of the securities and other legal matters by their own counsel, which will be named in the applicable prospectus supplement.

EXPERTS

The consolidated financial statements, and the related financial statement schedule, incorporated in this prospectus by reference to Parker-Hannifin Corporation’s Annual Report on Form 10-K, and the effectiveness of Parker-Hannifin Corporation’s internal control over financial reporting have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report, which is incorporated by reference herein. Such consolidated financial statements and financial statement schedule have been so incorporated by reference in reliance upon the report of such firm, given upon their authority as experts in accounting and auditing.

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PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution.

The following are the estimated expenses of the issuance and distribution of the securities being registered, all of which are payable by us.

Item 15. Indemnification of Directors and Officers.

Article VII of our amended code of regulations provides that we will indemnify, to the full extent permitted or authorized by the Ohio General Corporation Law, as it may from time to time be amended, any person made or threatened to be made a party to any threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative or investigative, by reason of the fact that he is or was a director, officer or employee of ours, or is or was serving at our request as a director, trustee, officer or employee of another corporation, partnership, joint venture, trust or other enterprise. The indemnification provided by our amended code of regulations is not exclusive of any other rights to which any person seeking indemnification may be entitled under our amended articles of incorporation or our amended code of regulations, or any agreement, vote of shareholders or disinterested directors, or otherwise, both as to action in his official capacity and as to action in another capacity while holding such office, and shall continue as to a person who has ceased to be a director, trustee, officer or employee and shall inure to the benefit of the heirs, executors and administrators of such person.

Section 1701.13(E) of the Ohio Revised Code provides as follows:

(E)(1) A corporation may indemnify or agree to indemnify any person who was or is a party, or is threatened to be made a party, to any threatened, pending or completed action, suit, or proceeding, whether civil, criminal, administrative, or investigative, other than an action by or in the right of the corporation, by reason of the fact that the person is or was a director, officer, employee, or agent of the corporation, or is or was serving at the request of the corporation as a director, trustee, officer, employee, member, manager, or agent of another corporation, domestic or foreign, nonprofit or for profit, a limited liability company, or a partnership, joint venture, trust, or other enterprise, against expenses, including attorney’s fees, judgments, fines, and amounts paid in settlement actually and reasonably incurred by the person in connection with such action, suit, or proceeding, if the person acted in good faith and in a manner the person reasonably believed to be in or not opposed to the best interests of the corporation, and, with respect to any criminal action or proceeding, if the person had no reasonable cause to believe the person’s conduct was unlawful. The termination of any action, suit, or proceeding by judgment, order, settlement, or conviction, or upon a plea of nolo contendere or its equivalent, shall not, of itself, create a presumption that the person did not act in good faith and in a manner the person reasonably believed to be in or not opposed to the best interests of the corporation, and, with respect to any criminal action or proceeding, the person had reasonable cause to believe that the person’s conduct was unlawful.

(2) A corporation may indemnify or agree to indemnify any person who was or is a party, or is threatened to be made a party, to any threatened, pending, or completed action or suit by or in the right of the corporation to procure a judgment in its favor, by reason of the fact that the person is or was a director, officer, employee, or agent of the corporation, or is or was serving at the request of the corporation as a director, trustee, officer, employee, member, manager, or agent of another corporation, domestic or foreign, nonprofit or for profit, a

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limited liability company, or a partnership, joint venture, trust, or other enterprise, against expenses, including attorney’s fees, actually and reasonably incurred by the person in connection with the defense or settlement of such action or suit, if the person acted in good faith and in a manner the person reasonably believed to be in or not opposed to the best interests of the corporation, except that no indemnification shall be made in respect of any of the following:

(a) Any claim, issue, or matter as to which such person is adjudged to be liable for negligence or misconduct in the performance of the person’s duty to the corporation unless, and only to the extent that, the court of common pleas or the court in which such action or suit was brought determines, upon application, that, despite the adjudication of liability, but in view of all the circumstances of the case, such person is fairly and reasonably entitled to indemnity for such expenses as the court of common pleas or such other court shall deem proper;

(b) Any action or suit in which the only liability asserted against a director is pursuant to section 1701.95 of the Ohio Revised Code.

(3) To the extent that a director, trustee, officer, employee, member, manager, or agent has been successful on the merits or otherwise in defense of any action, suit, or proceeding referred to in division (E)(1) or (2) of this section, or in defense of any claim, issue, or matter in the action, suit, or proceeding, the person shall be indemnified against expenses, including attorney’s fees, actually and reasonably incurred by the person in connection with the action, suit, or proceeding.

(4) Any indemnification under division (E)(1) or (2) of this section, unless ordered by a court, shall be made by the corporation only as authorized in the specific case, upon a determination that indemnification of the director, trustee, officer, employee, member, manager, or agent is proper in the circumstances because the person has met the applicable standard of conduct set forth in division (E)(1) or (2) of this section. Such determination shall be made as follows:

(a) By a majority vote of a quorum consisting of directors of the indemnifying corporation who were not and are not parties to or threatened with the action, suit, or proceeding referred to in division (E)(1) or (2) of this section;

(b) If the quorum described in division (E)(4)(a) of this section is not obtainable or if a majority vote of a quorum of disinterested directors so directs, in a written opinion by independent legal counsel other than an attorney, or a firm having associated with it an attorney, who has been retained by or who has performed services for the corporation or any person to be indemnified within the past five years;

(c) By the shareholders;

(d) By the court of common pleas or the court in which the action, suit, or proceeding referred to in division (E)(1) or (2) of this section was brought.

Any determination made by the disinterested directors under division (E)(4)(a) or by independent legal counsel under division (E)(4)(b) of this section shall be promptly communicated to the person who threatened or brought the action or suit by or in the right of the corporation under division (E)(2) of this section, and, within ten days after receipt of that notification, the person shall have the right to petition the court of common pleas or the court in which the action or suit was brought to review the reasonableness of that determination.

(5) (a) Unless at the time of a director’s act or omission that is the subject of an action, suit, or proceeding referred to in division (E)(1) or (2) of this section, the articles or the regulations of a corporation state, by specific reference to this division, that the provisions of this division do not apply to the corporation and unless the only liability asserted against a director in an action, suit, or proceeding referred to in division (E)(1) or (2) of this section is pursuant to section 1701.95 of the Ohio Revised Code, expenses, including attorney’s fees, incurred by a director in defending the action, suit, or proceeding shall be paid by the corporation as they are incurred, in advance of the final disposition of the action, suit, or proceeding, upon receipt of an undertaking by or on behalf of the director in which the director agrees to do both of the following:

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(i) Repay that amount if it is proved by clear and convincing evidence in a court of competent jurisdiction that the director’s action or failure to act involved an act or omission undertaken with deliberate intent to cause injury to the corporation or undertaken with reckless disregard for the best interests of the corporation;

(ii) Reasonably cooperate with the corporation concerning the action, suit, or proceeding.

(b) Expenses, including attorney’s fees, incurred by a director, trustee, officer, employee, member, manager, or agent in defending any action, suit, or proceeding referred to in division (E)(1) or (2) of this section, may be paid by the corporation as they are incurred, in advance of the final disposition of the action, suit, or proceeding, as authorized by the directors in the specific case, upon receipt of an undertaking by or on behalf of the director, trustee, officer, employee, member, manager, or agent to repay that amount, if it ultimately is determined that the person is not entitled to be indemnified by the corporation.

(6) The indemnification or advancement of expenses authorized by this section shall not be exclusive of, and shall be in addition to, any other rights granted to those seeking indemnification or advancement of expenses under the articles, the regulations, any agreement, a vote of shareholders or disinterested directors, or otherwise, both as to action in their official capacities and as to action in another capacity while holding their offices or positions, and shall continue as to a person who has ceased to be a director, trustee, officer, employee, member, manager, or agent and shall inure to the benefit of the heirs, executors, and administrators of that person. A right to indemnification or to advancement of expenses arising under a provision of the articles or the regulations shall not be eliminated or impaired by an amendment to that provision after the occurrence of the act or omission that becomes the subject of the civil, criminal, administrative, or investigative action, suit, or proceeding for which the indemnification or advancement of expenses is sought, unless the provision in effect at the time of that act or omission explicitly authorizes that elimination or impairment after the act or omission has occurred.

(7) A corporation may purchase and maintain insurance or furnish similar protection, including, but not limited to, trust funds, letters of credit, or self-insurance, on behalf of or for any person who is or was a director, officer, employee, or agent of the corporation, or is or was serving at the request of the corporation as a director, trustee, officer, employee, member, manager, or agent of another corporation, domestic or foreign, nonprofit or for profit, a limited liability company, or a partnership, joint venture, trust, or other enterprise, against any liability asserted against the person and incurred by the person in any such capacity, or arising out of the person’s status as such, whether or not the corporation would have the power to indemnify the person against that liability under this section. Insurance may be purchased from or maintained with a person in which the corporation has a financial interest.

(8) The authority of a corporation to indemnify persons pursuant to division (E)(1) or (2) of this section does not limit the payment of expenses as they are incurred, indemnification, insurance, or other protection that may be provided pursuant to divisions (E)(5), (6), and (7) of this section. Divisions (E)(1) and (2) of this section do not create any obligation to repay or return payments made by the corporation pursuant to division (E)(5), (6), or (7).

(9) As used in division (E) of this section, “corporation” includes all constituent entities in a consolidation or merger and the new or surviving corporation, so that any person who is or was a director, officer, employee, trustee, member, manager, or agent of such a constituent entity, or is or was serving at the request of such constituent entity as a director, trustee, officer, employee, member, manager, or agent of another corporation, domestic or foreign, nonprofit or for profit, a limited liability company, or a partnership, joint venture, trust, or other enterprise, shall stand in the same position under this section with respect to the new or surviving corporation as the person would if the person had served the new or surviving corporation in the same capacity.

We have entered into an indemnification agreement with each of our directors and executive officers. The indemnification agreements provide that we will indemnify and hold harmless our directors and executive officers to the full extent permitted by law and subject to other specified limitations against any and all expenses actually and reasonably incurred by them in connection with any threatened, pending, or completed action, suit, or proceedings, whether civil, criminal, administrative, or investigative (other than an action by or in the right of Parker), or settlement of such action, suit or proceeding, against them by reason of actions taken or not taken in such capacity.

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We currently maintain insurance coverage for the benefit of directors and executive officers with respect to many types of claims that may be made against them; however, there is no assurance of the continuation or renewal of such insurance.

Item 16. Exhibits.

The following documents are exhibits to the registration statement.

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Item 17. Undertakings.

The undersigned registrant hereby undertakes:

1. To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

(i) To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933;

(ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20 percent change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective registration statement; and

(iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement;

Provided, however, that paragraphs (1)(i), (1)(ii) and (1)(iii) do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Commission by the registrant pursuant to section 13 or section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in this registration statement, or is contained in a form of prospectus filed pursuant to Rule 424(b) that is part of this registration statement.

2. That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

3. To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

4. That, for the purpose of determining liability under the Securities Act of 1933 to any purchaser:

(i) Each prospectus filed by the registrant pursuant to Rule 424(b)(3) shall be deemed to be part of the registration statement as of the date the filed prospectus was deemed part of and included in the registration statement; and

(ii) Each prospectus required to be filed pursuant to Rule 424(b)(2), (b)(5), or (b)(7) as part of a registration statement in reliance on Rule 430B relating to an offering made pursuant to Rule 415(a)(1)(i), (vii), or (x) for the purpose of providing the information required by section 10(a) of the Securities Act of 1933 shall be deemed to be a part of and included in the registration statement as of the earlier of the date such form of prospectus is first used after effectiveness or the date of the first contract of sale of securities in the offering described in the prospectus. As provided in Rule 430B, for liability purposes of the issuer and any person that is at that date an underwriter, such date shall be deemed to be a new effective date of the registration statement

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relating to the securities in the registration statement to which that prospectus relates, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. Provided, however, that no statement made in a registration statement or prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated by reference into the registration statement or prospectus that is a part of the registration statement will, as to a purchaser with a time of contract of sale prior to such effective date, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement or made in any such document immediately prior to such effective date.

5. That, for the purpose of determining liability of the registrant under the Securities Act of 1933 to any purchaser in the initial distribution of the securities the undersigned registrant undertakes that in a primary offering of securities of the undersigned registrant pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned registrant will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser:

(i) Any preliminary prospectus or prospectus of the undersigned registrant relating to the offering required to be filed pursuant to Rule 424;

(ii) Any free writing prospectus relating to the offering prepared by or on behalf of the undersigned registrant or used or referred to by the undersigned registrant;

(iii) The portion of any other free writing prospectus relating to the offering containing material information about the undersigned registrant or its securities provided by or on behalf of the undersigned registrant; and

(iv) Any other communication that is an offer in the offering made by the undersigned registrant to the purchaser.

The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act of 1933, each filing of the registrant’s annual report pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

The undersigned registrant hereby undertakes to supplement the prospectus, after the expiration of the subscription period, to set forth the results of the subscription offer, the transactions by the underwriters during the subscription period, the amount of unsubscribed securities to be purchased by the underwriters, and the terms of any subsequent reoffering thereof. If any public offering by the underwriters is to be made on terms differing from those set forth on the cover page of the prospectus, a post-effective amendment will be filed to set forth the terms of such offering.

Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

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SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the city of Cleveland, state of Ohio, on the 19^th day of February 2013.

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

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INDEX TO EXHIBITS

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