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, 2017
Filed:
Nov. 09, 2011
Tatsuya Fukase, Tokyo, JP;
Masahiko Fujita, Tokyo, JP;
Dai Nakajima, Tokyo, JP;
Hitoshi Isoda, Tokyo, JP;
Naohide Maeda, Tokyo, JP;
Tatsuya Fukase, Tokyo, JP;
Masahiko Fujita, Tokyo, JP;
Dai Nakajima, Tokyo, JP;
Hitoshi Isoda, Tokyo, JP;
Naohide Maeda, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A rotary electric machine including a brush used to supply a field current to a field winding of a rotor, a brush holder holding the brush, a power circuit portion connected to a heat sink having fins, and a case covering the power circuit portion and the brush holder. An air passage is provided between the brush holder and the fins of the heat sink, and an opening is provided to the case so as to cover component members of the brush holder in a shape conforming to an outer peripheral portion of the brush holder, from which cooling air is allowed to pass through the air passage.