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. 07, 2016
Filed:
Oct. 24, 2013
Denso Corporation, Kariya, Aichi-pref., JP;
Nippon Soken, Inc., Nishio, Aichi-pref., JP;
Advics Co., Ltd., Kariya, Aichi-pref., JP;
Kazunori Uchiyama, Okazaki, JP;
Naoki Hakamada, Anjo, JP;
Kazuhide Uchida, Hamamatsu, JP;
Yasuhiro Kawase, Nishio, JP;
Takahiro Yamaguchi, Kariya, JP;
Tomoaki Kawabata, Takahama, JP;
Kunihito Ando, Okazaki, JP;
Tadayoshi Usami, Anjo, JP;
DENSO CORPORATION, Kariya, Aichi-pref., JP;
ADVICS CO., LTD., Kariya, JP;
NIPPON SOKEN, INC., Nishio, Aichi-pref., JP;
Abstract
A rotary pump has a linear groove formed on an end surface of a second side plate of an outer rotor. Thereby, it becomes possible to generate a force for pushing back the outer rotor to a sealing member side, and thus it becomes possible to reduce load applied to the second side plate. As a result, contact resistance between the outer rotor and the second side plate becomes smaller, and smoother pumping operation becomes possible. Further, since the force for pushing back the outer rotor to the first sealing member side is generated in the linear groove, it is possible to reduce an amount of decrease in a contacting area with the outer rotor and the second side plate, thereby reducing an amount of wear of the outer rotor and the second side plate.