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:
Nov. 12, 2013
Filed:
Nov. 17, 2009
Applicants:
Toshihiro Koizumi, Atsugi, JP;
Chiharu Nakazawa, Kawasaki, JP;
Ryohei Maruo, Kawasaki, JP;
Inventors:
Assignee:
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C 15/00 (2006.01); F01C 19/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A gear pump includes a gear to be driven by a drive shaft, a pair of side plate members adjoining side surfaces of the gear, respectively, to restrain leakage of an operating fluid, and a tip seal member or seal block for sealing the gear tip or circumference of the gear. At least one of the side plate members and the tip seal member are integral parts of a sealing member.