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:
Oct. 20, 2015
Filed:
Nov. 29, 2013
Nippon Soken, Inc., Nishio, Aichi-pref., JP;
Denso Corporation, Kariya, Aichi-pref., JP;
Advics Co., Ltd., Kariya, Aichi-pref., JP;
Yasuhiro Kawase, Nishio, JP;
Kazunori Uchiyama, Okazaki, JP;
Naoki Hakamada, Anjo, JP;
Kazuhide Uchida, Hamamatsu, JP;
Takahiro Yamaguchi, Kariya, JP;
Tomoaki Kawabata, Takahama, JP;
DENSO CORPORATION, Kariya, Aichi-pref., JP;
NIPPON SOKEN, INC., Nishio, Aichi-pref., JP;
ADVICS CO., LTD., Kariya, Aichi-pref., JP;
Abstract
A rotating pump includes an outer rotor and an inner rotor. The inner and outer rotors are rotated by a drive shaft between a first side plate and a second side plate to pump put fluid. The first side plate faces the inner and outer rotors and has a first surface and a second surface. The first surface is inclined to an axial direction of the drive shaft to create a wedge-shaped gap between itself and one of the inner and outer rotor. The second surface extends more parallel to a direction perpendicular to the axis direction of the drive shaft than the first surface does. The geometric configurations of the first and second surfaces serve to minimize the leakage of the brake fluid without sacrificing a reduction in resistance to sliding motion of the inner rotor and the outer rotor on the second side plate.