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:
Mar. 16, 2021
Filed:
Feb. 15, 2017
Applicant:
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Inventors:
Satoshi Nonaka, Sagamihara, JP;
Jun Soeda, Fujisawa, JP;
Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C 2/344 (2006.01); F04C 15/06 (2006.01); F04C 14/22 (2006.01);
U.S. Cl.
CPC ...
F04C 2/344 (2013.01); F04C 14/226 (2013.01); F04C 15/06 (2013.01);
Abstract
Provided is a variable displacement vane pump which is capable of reducing fluctuation in discharge rate. In the variable displacement vane pump, a first straightening vaneclosest to one end-side openingof a discharge passageamong a plurality of straightening vanesandarranged within the discharge pressure chamberis located so as not to face a communication holeof a pressure plate