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:
Apr. 07, 2015
Filed:
Oct. 25, 2012
Kobe Steel, Ltd., Kobe-shi, JP;
Kobelco Construction Machinery Co., Ltd., Hiroshima-shi, JP;
Akira Tsutsui, Kobe, JP;
Seiji Saiki, Hiroshima, JP;
Kazushige Koiwai, Hiroshima, JP;
Akira Nakazumi, Hiroshima, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Kobelco Construction Machinery Co., Ltd., Hiroshima-shi, JP;
Abstract
Provided is a motor including a rotor, a stator having a stator core and a coil, a stator frame, an end cover, first and second bearings, and a heat radiating resin in the stator frame. The coil includes first and second end portions projecting oppositely and axially. The stator frame includes a peripheral wall and an end wall, whose respective central parts form first and second boss portions holding the first and second bearings respectively. The heat radiating resin includes a first resin part covering the first end portion and closely contacting an inner surface of the stator frame, and a second resin part covering the second end portion and separating from an outer peripheral surface of the second boss portion. The first resin part has a portion between the first end portion and the first boss portion, the portion having a greater thickness than that of the other.