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:
Jan. 27, 1998
Filed:
Jun. 25, 1996
Applicant:
Inventors:
Mutsumi Mitarai, Fuji, JP;
Atsushi Kobayashi, Fuji, JP;
Assignee:
Jatco Corporation, Fuji, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C / ;
U.S. Cl.
CPC ...
418 79 ; 418102 ; 418171 ;
Abstract
Along a peripheral wall surface of a pump housing at a closure portion where a working fluid in a volume chamber defined by engagement of an inner rotor and an outer rotor, is enclosed, a liquid pressure is relieved by the liquid pressure relieving groove for relieving a liquid pressure of the working fluid from the volume chamber to a sliding gap along an outer peripheral surface of the outer rotor.