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:
Jan. 02, 2007
Filed:
Oct. 22, 2003
Yasuhiko Yamagishi, Yokosuka, JP;
Ryuichi Idoguchi, Yokohama, JP;
Hiroyuki Hirano, Kanagawa-ken, JP;
Tamotsu Kawamura, Yokohama, JP;
Yasuhiko Yamagishi, Yokosuka, JP;
Ryuichi Idoguchi, Yokohama, JP;
Hiroyuki Hirano, Kanagawa-ken, JP;
Tamotsu Kawamura, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A cooling system for an electric motor of a vehicle comprises an electric motor which drives the vehicle, a reduction gear which adjusts a driving force of an output shaft of the electric motor and transmits the driving force to a drive shaft, and an in-shaft refrigerant passage provided in a shaft of the reduction gear and the output shaft of the electric motor. In the cooling system, a refrigerant which has passed through the in-shaft refrigerant passage is collected outside a motor case housing the electric motor, and is circulated.