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. 11, 2013
Filed:
Nov. 17, 2010
Ryuichi Sakakibara, Toyota, JP;
Kiyotaka Ohtahara, Toyota, JP;
Kikuji Hayashida, Toyota, JP;
Yoshimasa Kuno, Toyota, JP;
Ryuichi Sakakibara, Toyota, JP;
Kiyotaka Ohtahara, Toyota, JP;
Kikuji Hayashida, Toyota, JP;
Yoshimasa Kuno, Toyota, JP;
Taiho Kogyo Co., Ltd., Toyota-shi, Aichi, JP;
Abstract
A vane pumphas a pump chamberA through an axial direction oil supply hole, a diameter direction oil supply holeand an axial direction oil supply grooveof an oil supply passage. A gas passagecontains a gas groovewhose one end is made to communicate with an outer space, the gas groovebeing formed on an outer peripheral surface of a shaft partB of a rotor, and the other end of this gas groove is made to intermittently overlappingly communicate with the axial direction oil supply grooveby a rotation of the rotor.