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:
Feb. 21, 1989
Filed:
Mar. 17, 1987
Applicant:
Inventors:
Akiyasu Sumi, Kanagawa, JP;
Shigeru Yoshida, Saitama, JP;
Akira Kurosawa, Saitama, JP;
Tohru Takahashi, Saitama, JP;
Yoshitaka Kondoh, Kanagawa, JP;
Tatsuo Chigira, Kanagawa, JP;
Assignees:
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Denshi Kabushiki Kaisha, Saitama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310254 ; 310 / ; 310156 ; 310184 ; 310D / ; 318254 ; 324208 ;
Abstract
A motor comprises a rotor made of a permanent magnet and pairs of yokes having pairs of magnetic pole parts arranged round the circumference of the rotor. The rotor is arranged to be pivotally carried by a bearing part disposed at one end of the yoke. A position detecting element which detects the magnetic pole position of the rotor is carried by the yoke. An exciting coil is wound round each pair of the yokes.