The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 1983
Filed:
Mar. 09, 1981
Applicant:
Inventor:
Vernon K Quarve, Minneapolis, MN (US);
Assignee:
Graco Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01B / ; F01L / ;
U.S. Cl.
CPC ...
91337 ; 91321 ; 91342 ;
Abstract
A reciprocation valve for a hydraulically actuated reciprocation motor, wherein the motor has hydraulic inlet and outlet passages into a cylinder through a porting block, and a slidable collar is fitted over the porting block for selectively opening and closing the passages, and a lightweight carriage assembly is attached to the collar and is actuated by a trip rod coupled to a piston within the cylinder.