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. 13, 2001
Filed:
Aug. 31, 2000
Hiroshi Aoyama, Tsuchiura, JP;
Hidehiro Ejima, Hitachi, JP;
Yoshiyuki Igarashi, Takahagi, JP;
Toshio Hattori, Ushiku, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Provided is a rotating electric machine in which the cooling capacity is improved by increasing the width and depth of a gas vent groove,formed in a creepage block,and in which a fracture is prevented near the face of the creepage block,abutting against a magnetic winding,of the creepage block,fabricated from a resin material containing reinforcing fibers. The reinforcing fibers of the creepage block,fabricated from a resin material containing reinforcing fibers are continuously disposed to form straight lines and curved lines along the contour of the gas vent groove, whereby the area of interlayer slip face,subjected to a shearing force acting on the creepage block due to a temperature change of a rotor,is increased and the shearing force per unit a slip area is decreased, thereby to prevent a shearing slip fracture near the face of the creepage block,abutting against the magnetic winding