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.

Date of Patent:
May. 01, 2007

Filed:

Mar. 30, 2005
Applicants:

Takahiro Tsutsui, Saitama, JP;

Takaaki Nagi, Saitama, JP;

Inventors:

Takahiro Tsutsui, Saitama, JP;

Takaaki Nagi, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 9/19 (2006.01); H02K 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

The motor cooling system of the present invention is a system for cooling a three-phase alternating current motor mounted on a vehicle as a traction motor where oil is introduced as cooling oil from driving-related equipment of the vehicle, wherein the traction motor is equipped with a stator having a neutral point, wherein the vehicle is in a high-load driving state when a larger load is applied to the traction motor than a predetermined amount, the neutral point contacts the cooling oil with a larger contact amount than when the vehicle is not in the high-load driving state.


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