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:
Jul. 13, 2010
Filed:
Dec. 11, 2007
Hidekazu Katayama, Chiyoda-ku, JP;
Daisuke Togo, Chiyoda-ku, JP;
Noboru Uemori, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A motor which, even if the commutator is deformed, suppresses brush deformation to thereby prevent short-circuiting between the positive-pole-side brush and the motor housing. A motor includes: a motor housing; a stator; a rotor; a commutator; a positive-pole-side brush; a negative-pole-side brush; and a brush holding frame fixed to the motor housing and having a positive-pole-side brush holding portion holding the positive-pole-side brush and a negative-pole-side brush holding portion holding the negative-pole-side brush, in which the positive-pole-side brush holding portion and the negative-pole-side brush holding portion each curve about a circumference of the commutator, and in which a thickness of an outer portion of the positive-pole-side brush holding portion in a circumferential direction of the commutator is greater than a thickness of an outer portion of the negative-pole-side brush holding portion in the circumferential direction of the commutator.