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. 19, 2010
Filed:
Apr. 14, 2006
Hideyuki Yoshizawa, Tokyo, JP;
Kazushi Horie, Tokyo, JP;
Tadashi Maeda, Tokyo, JP;
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Abstract
A cooling device of an electric motor for a vehicle for receiving cooling air into the electric motor through a suction port according to the rotation of a rotor shaft on which a rotor core, which is disposed opposite to a stator core, is installed. The cooling device includes an air volume regulating mechanism regulating a cooling air volume received therein through the suction port according to an ambient temperature. Since the cooling air volume received in the cooling device through the suction port is regulated according to the ambient temperature, the cooling of the electric motor can be optimized, and noise generated can be efficiently reduced according to the ambient temperature.