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:
Nov. 27, 2007
Filed:
Mar. 12, 2004
Kazuaki Hiramatsu, Tokyo, JP;
Makoto Konami, Abiko, JP;
Yutaka Satoh, Chiba, JP;
Taisuke Matsushita, Abiko, JP;
Shigekazu Suzuki, Kashiwa, JP;
Katsuhiro Kuroda, Hachioji, JP;
Kazuo Ooki, Yokohama, JP;
Akibiko Toda, Chigasaki, JP;
Kazuaki Hiramatsu, Tokyo, JP;
Makoto Konami, Abiko, JP;
Yutaka Satoh, Chiba, JP;
Taisuke Matsushita, Abiko, JP;
Shigekazu Suzuki, Kashiwa, JP;
Katsuhiro Kuroda, Hachioji, JP;
Kazuo Ooki, Yokohama, JP;
Akibiko Toda, Chigasaki, JP;
Hitachi Medical Corporation, Tokyo, JP;
Abstract
A hydraulic pressure actuator having an inner tube and a mesh sleeve covering the outer periphery of the inner tube and longitudinally extendable by pressure fluid fed into the inner tube, wherein a low friction body formed in an elastic cylindrical body by knitting fine fibers in a circumferential direction without a seam is disposed between the inner tube and the mesh sleeve, and the low friction body contributes to an increase in the life of the hydraulic pressure actuator repeatedly performing extension/retraction motions. The hydraulic pressure actuator is used as an actuator for driving a CPM device which supports the extremity of a human body by ay least one of a plurality of members combined with each other and performs the rehabilitation of the joints of a handicapped by operating the member.