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:
Sep. 30, 2003
Filed:
Dec. 15, 2000
Keiichi Shinohara, Anjo, JP;
Yasuo Yamaguchi, Anjo, JP;
Kenichiro Nomura, Anjo, JP;
Satoru Wakuta, Anjo, JP;
Aisin AW Co., Ltd., , JP;
Abstract
A motor includes a cylindrical rotor , a stator arranged at a predetermined distance from an outer periphery of the rotor , and a position sensor for detecting a rotational position of the rotor , wherein the stator includes a stator core and a plurality of stator windings arranged along a circumferential direction of the stator core at substantially equal distances from one another. A shield plate for shielding magnetic flux from the stator windings to the position sensor is mounted against the stator core . Magnetic flux from the stator windings pass through a closed loop starting from the stator windings through the stator core and the shield plate and back to the stator windings to prevent the magnetic flux leakage from the stator windings from flowing to another member. With this arrangement, the magnetic flux leakage from the stator windings does not affect the position sensor (magnetic sensor) which detects the rotational position of the rotor.