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:
Mar. 27, 2012
Filed:
Dec. 04, 2007
Yasuhiro Yukitake, Kashiwara, JP;
Yasuhiro Yukitake, Kashiwara, JP;
JTEKT Corporation, Osaka-Shi, Osaka, JP;
Abstract
An electric pump unit includes an outer rotor, an inner rotor which meshes with the outer rotor in such a state that the inner rotor and the outer rotor are placed eccentrically to each other and which is driven by being supported by a rotation shaft of an electric motor, a pump housing which defines a cavity portion which accommodates therein the outer rotor and the inner rotor, inlet and outlet ports which are provided on inlet and outlet sides, respectively, so as to suck and discharge a fluid and which communicate with each other via the cavity portion, and a fluid circulating unit for circulating the fluid from the outlet side to the inlet side when a fluid pressure at the outlet side reaches or exceeds a predetermined pressure.