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:
Feb. 06, 2018
Filed:
Sep. 25, 2015
Applicant:
Showa Corporation, Gyoda-shi, JP;
Inventors:
Assignee:
SHOWA CORPORATION, Gyoda-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01C 19/00 (2006.01); F01C 19/08 (2006.01); F04C 11/00 (2006.01); F04C 2/18 (2006.01); B63H 20/10 (2006.01); F04C 15/00 (2006.01);
U.S. Cl.
CPC ...
F04C 11/003 (2013.01); B63H 20/10 (2013.01); F01C 19/00 (2013.01); F01C 19/08 (2013.01); F04C 2/18 (2013.01); F04C 11/006 (2013.01); F04C 15/0046 (2013.01); F04C 15/0049 (2013.01); F04C 2270/13 (2013.01);
Abstract
A pump apparatus includes a shaft, a first pump, and a second pump. The first pump includes a first driving gear disposed on the shaft in a first phase and rotatable with the shaft to feed a first operating fluid. The second pump includes a second driving gear disposed on the shaft in a second phase shifted from the first phase. The second driving gear is coaxial with the first driving gear and rotatable with the shaft to feed a second operating fluid.