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. 14, 2005
Filed:
Jun. 04, 2003
Applicants:
Kazunori Uchiyama, Nishio, JP;
Naoki Hakamada, Anjo, JP;
Takahiro Yamaguchi, Kariya, JP;
Takashi Satou, Okazaki, JP;
Inventors:
Kazunori Uchiyama, Nishio, JP;
Naoki Hakamada, Anjo, JP;
Takahiro Yamaguchi, Kariya, JP;
Takashi Satou, Okazaki, JP;
Assignees:
Advics Co., Ltd., Aichi-pref., JP;
Nippon Soken Inc., Aichi-pref., JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C018/00 ;
U.S. Cl.
CPC ...
Abstract
In a rotary pump for a braking apparatus, a discharge trench is formed on an axial direction end surface of a second side plate that forms a mechanical seal. As a result, rotors are pressed back toward a side of a first side plate by a discharge pressure of brake fluid channeled to the discharge trench. Accordingly, a force pressing the rotors toward the second side plate is reduced and frictional resistance is reduced.