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:
Sep. 28, 2010
Filed:
Nov. 07, 2007
Yutaka Higashimura, Hitachi, JP;
Yoshimi Kurahara, Hitachi, JP;
Hiroshi Miyao, Hitachinaka, JP;
Keiji Suzuki, Hitachi, JP;
Mitsuru Onoda, Takahagi, JP;
Nobuaki Tanaka, Hitachi, JP;
Yutaka Higashimura, Hitachi, JP;
Yoshimi Kurahara, Hitachi, JP;
Hiroshi Miyao, Hitachinaka, JP;
Keiji Suzuki, Hitachi, JP;
Mitsuru Onoda, Takahagi, JP;
Nobuaki Tanaka, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
When a rotating electrical machine winding is inserted into a slot with a protective insulation intervening between them, a semiconductive insulating layer is lap-wound between an interlayer insulating layer of the rotating electrical machine winding and the protective insulation, the semiconductive insulating layer being formed by center-folding a continuous semiconductive sheet in the longitudinal direction. A thermal stress relaxation layer is provided inside the center-folded continuous semiconductive sheet so that thermal stress exerted in thickness direction of the insulating layers is absorbed.