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:
Oct. 25, 2016
Filed:
Jun. 07, 2011
Tatsuya Fukase, Chiyoda-ku, JP;
Hitoshi Isoda, Chiyoda-ku, JP;
Naohide Maeda, Chiyoda-ku, JP;
Masahiko Fujita, Chiyoda-ku, JP;
Dai Nakajima, Chiyoda-ku, JP;
Tatsuya Fukase, Chiyoda-ku, JP;
Hitoshi Isoda, Chiyoda-ku, JP;
Naohide Maeda, Chiyoda-ku, JP;
Masahiko Fujita, Chiyoda-ku, JP;
Dai Nakajima, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An electric rotating machine is provided that efficiently radiates heat, caused in the vicinity of a portion where a brush and a slip ring makes contact with each other, to the outside of a brush holder and that can prevent the temperature of the brush from excessively rising. The brush holder holding the brush that supplies a magnetic-field current to a magnetic-field winding by way of the slip ring is provided with an energization terminal that electrically connects a magnetic-field circuit with the brush and a brush cooling metal member that cools the brush; the brush cooling metal member radiates heat, generated in the vicinity of a contact portion between the brush and the slip ring, to the outside of the brush holder.