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:
Mar. 14, 2006
Filed:
Aug. 30, 2002
Applicants:
Youichi Fujita, Tokyo, JP;
Sotsuo Miyoshi, Tokyo, JP;
Satoru Hasegawa, Tokyo, JP;
Katsunori Takai, Tokyo, JP;
Inventors:
Youichi Fujita, Tokyo, JP;
Sotsuo Miyoshi, Tokyo, JP;
Satoru Hasegawa, Tokyo, JP;
Katsunori Takai, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Powder produced by abrasion due to sliding between a brush and a commutator is prevented from moving toward a rotor. A recess is provided between the rotor and a slide face of the brush and the commutator, where powder produced by abrasion at the brush may enter into a motor and increase sliding resistance of the rotor. Thus, there is no such powder produced by abrasion entering into the motor as increasing sliding resistance of the rotor.