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:
Aug. 04, 1998
Filed:
Nov. 21, 1996
Tsutomu Kinoshita, Tokyo, JP;
Nobuyuki Yagi, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A totally-enclosed traction motor for electric railcar including, a frame structure of totally-enclosed cylindrical shape which is provided with a window, a rotor shaft rotatably supported to the frame structure coaxially with the frame structure, a rotor of cylindrical shape coaxially fixed to the rotor shaft which is rotated with the rotor shaft as one body, a stator of cylindrical shape fixed to an inner surface of the frame structure coaxially with the rotor shaft with keeping a gap between an inner surface of the stator and an outer surface of the rotor, and a cooling body mounted to the frame structure so as to cover the window and provided with a plurality of heat absorbing fins fixed to the cooling body from the inside and a plurality of radiation fins fixed to the cooling body from the outside.