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:
Jun. 25, 2002
Filed:
Nov. 02, 2000
Applicant:
Inventors:
Takao Ito, Sagamihara, JP;
Hisanobu Kanamaru, Sagamihara, JP;
Assignee:
Aida Engineering Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 9/00 ; F01B 3/00 ;
U.S. Cl.
CPC ...
F04B 9/00 ; F01B 3/00 ;
Abstract
A variable displacement piston pump/motor has a simple, compact structure that is suited for use as an oil-pressure generating device for machine presses and the like. In the variable displacement piston pump/motor, a flywheel and a rotation shaft of a pump device are disposed and connected concentrically.