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:
Jun. 09, 1981
Filed:
Mar. 26, 1979
Applicant:
Inventor:
Frank Woodruff, New Hartford, NY (US);
Assignee:
The Bendix Corporation, Teterboro, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ; F04C / ; F04C / ;
U.S. Cl.
CPC ...
417440 ; 418185 ;
Abstract
A variable displacement balanced vane pump includes an alternate flow passage for fluid being compressed in an intervane chamber whereby the excess portion of the fluid is by-passed from the pump discharge zone to the pump inlet zone without appreciably increasing the pressure of the excess fluid portion to minimize the required pump input energy.