Family

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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
PARKER HANNIFIN CUSTOMER SUPPORT INC	14300 ALTON PARKWAY IRVINE TX 92618

International Classification(s)

• F15B:SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUI....

• 1987 Application Filing Year
• F15B Class
• 199 Applications Filed
• 0 Patents Issued To-Date
• 0 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Petro, John D	Hubbard, OH	8	84
# of filed Patents : 8 Total Citations : 84

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Patent Citation Ranking

• 22 Citation Count
• F15B Class

• 0 % this patent is cited more than
• 37 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent No: 4777981

Magnetic detent joy stick and stack remote control valves

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Abstract

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A magnetic detent joy stick and stack remote control valve is provided having a traction magnet detent in which a magnet plate activated by the detent is constantly urged against the coil housing to prevent dirt from getting between the coil plate and coil housing face when the power is cut off and/or the valve is in neutral.

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Description

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Claims

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Legal Events

 

• AS2001
• FPAY2000
• AS2000
• AS�1996
• AS�1996
• FPAY1996
• FPAY1992
• FEPP1988
• I1988
• STCF1988
• F1987
• PD1987
• AS1987

Date	Code	Event	Description
Jul 10, 2001	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PARKER-HANNIFIN CORPORATION;REEL/FRAME:012036/0523 Owner name: PARKER HANNIFIN CUSTOMER SUPPORT INC., CALIFORNIA Effective Date: Jul 10, 2001
Apr 12, 2000	FPAY	FEE PAYMENT	year of fee payment: 12
Apr 11, 2000	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:COMMERCIAL INTERTECH CORP.;REEL/FRAME:011077/0176 Owner name: PARKER-HANNIFIN CORPORATION, OHIO Effective Date: Apr 11, 2000
Oct 31, 1996	AS�	SECURITY INTEREST	free format text: RELEASE OF PATENT, TRADEMARK AND COPYRIGHT SECURITY AGREEMENT;ASSIGNOR:MELLON BANK, N.A.;REEL/FRAME:008283/0551 Owner name: COMMERCIAL INTERTECH CORP., OHIO Effective Date: Oct 31, 1996
Aug 09, 1996	AS�	SECURITY INTEREST	free format text: SECURITY AGREEMENT;ASSIGNOR:COMMERCIAL INTERTECH CORP.;REEL/FRAME:008119/0422 Owner name: MELLON BANK, N.A., PENNSYLVANIA Effective Date: Aug 09, 1996
Apr 10, 1996	FPAY	FEE PAYMENT	year of fee payment: 8
Apr 20, 1992	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 07, 1988	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Oct 18, 1988	I	Issuance
Aug 15, 1988	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
May 18, 1987	F	Filing
May 18, 1987	PD	Priority Date
Apr 30, 1987	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PETRO, JOHN D.;REEL/FRAME:004733/0558 Owner name: COMMERCIAL SHEARING, INC., 1775 LOGAN AVENUE, YOUN Effective Date: Apr 30, 1987