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. 06, 2006
Filed:
Oct. 15, 2002
Masao Shinoda, Kanagawa, JP;
Chishiro Yamashina, Kanagawa, JP;
Shimpei Miyakawa, Kanagawa, JP;
Ebara Corporation, Tokyo, JP;
Abstract
The present invention relates to a vane-type rotary machine suitable for use in applications where a low-viscosity fluid such as water is used as a working fluid. According to the present invention, a vane-type rotary machine having a rotor () mounted with vanes and rotatably housed in a cam casing () includes a motor supply opening (or pump discharge opening) () for a working fluid, a motor return opening (or pump suction opening) () formed in the cam casing for a working fluid, and branch flow passages (and) branched from the motor supply opening (or pump discharge opening) and the motor return opening (or the pump suction opening) and communicating with vane chambers (and). The distances of the branch flow passages are identical to each other.