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:
Nov. 11, 2014
Filed:
Mar. 26, 2012
Kouichi Watanabe, Hiratsuka, JP;
Kouya Iizuka, Hiratsuka, JP;
Takao Nagano, Kawasaki, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
A cooling structure of a generator motor includes: a first passage provided to an end side member placed at one end of a housing of a generator motor, the first passage extending toward a rotation center axis of an input/output shaft housed in the housing, the first passage opening to a side of the input/output shaft, and the first passage including a restriction section halfway through; and a second passage provided to the end side member, branching off from the first passage at a position on an outer side in a radial direction of the input/output shaft than the restriction section and subsequently extending toward a rotor attached to an outside of the input/output shaft, and the second passage opening to a side of the rotor.