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. 17, 2010
Filed:
Jul. 12, 2007
Applicants:
Teruyoshi Abe, Hitachi, JP;
Motoya Ito, Hitachinaka, JP;
Fumio Tajima, Hitachi, JP;
Yoshihisa Ishikawa, Hitachinaka, JP;
Inventors:
Teruyoshi Abe, Hitachi, JP;
Motoya Ito, Hitachinaka, JP;
Fumio Tajima, Hitachi, JP;
Yoshihisa Ishikawa, Hitachinaka, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A rotating electrical machine comprises a stator and a rotor; the stator comprising a stator core having teeth and slots, and stator windings disposed in the slots, wherein the stator core is made of laminated steel sheets, teeth and slots of the steel sheet are made by etching, and the thickness of the steel sheet is between 0.05 mm and 0.30 mm. Specifically, it is preferable that the steel sheet used herein be a silicon steel sheet containing crystalline particles.