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:
Nov. 06, 1984
Filed:
Aug. 03, 1981
Applicant:
Inventors:
Ottmar Winkler, Schweinfurt, DE;
Egon Pfaller, Dittelbrunn, DE;
Assignee:
SKF Kugellagerfabriken GmbH, Schweinfurt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01B / ;
U.S. Cl.
CPC ...
92 31 ; 92 33 ; 9216 / ; 417534 ;
Abstract
A piston pump assembly comprising a housing, a piston member mounted for axial movement in a bore of the said housing forming a piston chamber, and arranged coaxially relative to a drive shaft, said piston comprising a thin-walled member of generally cup shaped configuration, cam means associated with said drive shaft disposed in the recess of said cup shaped piston and cam follower means associated with said piston operatively connected to said cam means whereby rotation of said shaft effects through said cam and cam follower means axial back and forth movement of said piston in said piston chamber.