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. 22, 1994
Filed:
Feb. 26, 1993
Applicant:
Inventor:
Glenn C Wells, Minonk, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123467 ; 123506 ;
Abstract
An improved reverse flow check valve assembly adapted for a unit fluid pump-injector including a first stop having at least one inlet passage, a second stop, and a movable check. The check includes an internal passage spaced from the inlet passage defined in the first stop. The present embodiment has a configuration which is compact and minimizes wear without compromising performance.