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. 31, 2007
Filed:
Apr. 27, 2004
Satoshi Honda, Saitama, JP;
Yoshihisa Kanno, Saitama, JP;
Satoshi Honda, Saitama, JP;
Yoshihisa Kanno, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An electric vehicle is provided with a drum brake unit on a rear wheel rotated by drive force of an electric motor. A first set of fins, for cooling the electric motor and the drum brake unit, are provided between the electric motor and the drum brake unit. Specifically, the first set of fins are provided on an inner side surface of a case body. It is possible to cool the electric motor using the first set of fins, and it is also possible to remove heat of the drum brake unit using the first set of fins. The fins act as a heat sink to dissipate heat generated by the drum brake unit, and to resist heat transfer from the drum brake unit to the electric motor, helping to more efficiently cool the electric motor.