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:
Jun. 28, 2016

Filed:

Mar. 08, 2012
Applicants:

Yasuhiko Matsuki, Fujisawa, JP;

Akira Minamiura, Hiratsuka, JP;

Inventors:

Yasuhiko Matsuki, Fujisawa, JP;

Akira Minamiura, Hiratsuka, JP;

Assignee:

Komatsu Ltd., Tokyo, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02K 9/19 (2006.01); H02K 5/20 (2006.01);
U.S. Cl.
CPC ...
H02K 9/19 (2013.01); H02K 5/20 (2013.01);
Abstract

It is an object to decrease an amount of a cooling medium which stays in a housing of an electric motor and is not discharged to the outside when cooling the electric motor by the cooling medium. For this reason, an electric motor includes a first discharge port which is provided in a first flange of a housing so that the cooling medium passes therethrough, a second discharge port which is provided in the first flange so that the cooling medium in the housing passing a bearing passes therethrough, and a discharge passageway which discharges the cooling medium passing the first discharge port and the second discharge port to the outside of the housing.


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