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. 10, 2005
Filed:
Feb. 13, 2001
Masao Shinoda, Kanagawa, JP;
Shimpei Miyakawa, Kanagawa, JP;
Chishiro Yamashina, Kanagawa, JP;
Tamami Takahashi, Tokyo, JP;
Yoshihiro Mochizuki, Kanagawa, JP;
Shinzo Mammoto, Tokyo, JP;
Shiro Kumazawa, Tokyo, JP;
Ryuji Kodama, Tokyo, JP;
Masao Shinoda, Kanagawa, JP;
Shimpei Miyakawa, Kanagawa, JP;
Chishiro Yamashina, Kanagawa, JP;
Tamami Takahashi, Tokyo, JP;
Yoshihiro Mochizuki, Kanagawa, JP;
Shinzo Mammoto, Tokyo, JP;
Shiro Kumazawa, Tokyo, JP;
Ryuji Kodama, Tokyo, JP;
Ebara Corporation, Tokyo, JP;
Abstract
A hydraulic drive system that does not cause a decrease in efficiency of actuators, does not hinder an optimal action of devices such as flow adjustment valves, and does not cause any corrosion of water acting as an operating fluid. The system uses water as an operating fluid. The system includes a hydraulic generation apparatusincluding, a main tank, a return path, an accessory tank, and a water disposal apparatusdisposed in a path. The operating fluid from structuring devices of the processing apparatusesandflows through the return path. The operating fluid flows from the accessory tankto the main tankthrough the pathand the water disposal apparatus