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:
Dec. 03, 2002
Filed:
Jul. 31, 2000
Youichi Fujita, Tokyo, JP;
Osamu Yatsuki, Tokyo, JP;
Toshihiko Miyake, Tokyo, JP;
Sotsuo Miyoshi, Tokyo, JP;
Yuji Nakahara, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A valve device comprising a stator having a predetermined number of coils arranged with substantially equal intervals in peripheral directions of a stator core, a rotor having a plurality of permanent magnet magnetic poles at positions corresponding to the coils on an outer peripheral surface of the stator a current carrying means commutating a direct current supplied from a power source through the rotor and applying the current to the coils of the stator a shaft member located in a center of the rotor and being movable in a direction of the shaft in response to rotation of the rotor and a valve member opening and closing by movement of the shaft member for providing excellent responsiveness of valve opening and closing operations.