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:
Aug. 07, 2018
Filed:
Jun. 22, 2010
Applicant:
Kazuya Ando, Okazaki, JP;
Inventor:
Kazuya Ando, Okazaki, JP;
Assignee:
JTEKT CORPORATION, Osaka-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04C 2/344 (2006.01); F01C 21/08 (2006.01); F01C 21/10 (2006.01);
U.S. Cl.
CPC ...
F04C 2/3446 (2013.01); F01C 21/0863 (2013.01); F01C 21/108 (2013.01);
Abstract
In a vane pump, a communication groove that provides communication between a communication hole and a discharge port is formed in an outer side face of a rear housing. An opening of the communication groove is blocked by a fitting face of a control valve case. A back-pressure introduction passage that provides communication between the communication hole and an outlet is formed by the communication groove and the fitting face of the control valve case. The back-pressure introduction passage is formed between the rear housing and the control valve case, that is, on the outer side of the housing.