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:
May. 12, 2015
Filed:
Mar. 19, 2013
Applicant:
Kayaba Industry Co., Ltd., Minato-ku, Tokyo, JP;
Inventors:
Assignee:
Kayaba Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 31/02 (2006.01); F15B 11/024 (2006.01); F15B 13/04 (2006.01);
U.S. Cl.
CPC ...
F15B 11/024 (2013.01); F15B 13/0401 (2013.01); F15B 2211/20515 (2013.01); F15B 2211/31529 (2013.01); F15B 2211/275 (2013.01);
Abstract
A fluid pressure pump motor includes a supply/discharge passage where both a hydraulic fluid pumped in to a fluid pressure pump and a hydraulic fluid discharged from the fluid pressure motor flow, and a variable valve provided in the supply/discharge passage to control the fluid path area of the supply/discharge passage. The variable valve reduces the fluid path area of the supply/discharge passage for simultaneously actuating the fluid pressure pump and the fluid pressure motor to be smaller than the fluid path area for actuating only one of the fluid pressure pump and the fluid pressure motor.