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:
Sep. 25, 2007
Filed:
Aug. 12, 2003
Applicants:
Masao Shinoda, Fujisawa, JP;
Chishiro Yamashita, Fujisawa, JP;
Shimpei Miyakawa, Fujisawa, JP;
Inventors:
Assignee:
Ebara Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F03C 2/00 (2006.01); F04C 2/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A vane-type hydraulic motor includes a rotor () having a main shaft () and a plurality of vanes (), a cam casing () having a chamber () for rotatably housing the rotor (), a first port () and a second port () for supplying a working fluid into the chamber () and discharging the working fluid from the chamber (). A bypass path () is provided for allowing the working fluid to flow from bearing portions () supporting the main shaft (). A drain port () is provided for discharging the working fluid to the exterior.