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:
Jun. 19, 2012
Filed:
Mar. 02, 2009
Daiki Tanaka, Zamai, JP;
Daiki Tanaka, Zamai, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
An electric motor () of the present invention includes: a stator (); a rotor () axially supported to a rotational shaft () in such a configuration as to rotate relative to the stator (), the rotor () being adapted to be cooled by a cooling medium (L); a cooling medium storing portion () disposed on the stator () side and storing therein () the cooling medium (L); and a cooling medium channel () for leading the cooling medium (L) from the cooling medium storing portion () to the rotor (), wherein a discharge port () for discharging the cooling medium (L) of the cooling medium channel () is disposed close to a rotational portion () of the rotor (), the cooling medium storing portion () is disposed lower than the discharge port (), and a negative pressure caused between the rotor () and the discharge port () sucks the cooling medium (L) in the cooling medium storing portion ().