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:
Oct. 07, 2003
Filed:
Mar. 07, 2001
Applicant:
Inventors:
Assignee:
Ebara Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01C 1/344 ;
U.S. Cl.
CPC ...
F01C 1/344 ;
Abstract
The present invention relates to a vane rotary machine such as a vane pump or a vane motor. The vane rotary machine has a rotor ( ) supporting vanes ( ) thereon and housed in a cam casing ( ), and a main shaft ( ) attached to the rotor ( ) and rotatably supported by a bearing assembly ( ). A working fluid from a discharge port ( ) is branched and led to the bearing assembly ( ) by a fluid path ( ). The main shaft ( ) has a working fluid introduction recess ( ) defined in a region thereof in which the bearing assembly ( ) is disposed, and the main shaft has a reduced diameter in the working fluid introduction recess. The working fluid is introduced into the working fluid introduction recess ( ).