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:
Feb. 13, 1996
Filed:
Oct. 03, 1994
Applicant:
Inventor:
Anthony M Claas, Waukesha, WI (US);
Assignee:
Dynex/Rivett, Inc., Pewaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01B / ; F01B / ; F04B / ;
U.S. Cl.
CPC ...
92 71 ; 91499 ; 417269 ;
Abstract
The disclosure relates to a pump having a wobble plate, at least one piston assembly reciprocated by the wobble plate, and a mechanism retaining the piston assembly in contact with the wobble plate. In the improvement, the mechanism includes a hold-down plate having a number of radially-extending retention fingers. Each finger extends into a fill opening of a separate piston assembly and retains such assembly in contact with the pump wobble plate. The piston shoe is maintained in sliding contact with the wobble plate; that is, separation of the piston assembly from the wobble plate is thereby substantially prevented.