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:
Mar. 19, 2013
Filed:
Jan. 08, 2010
Daisuke Kori, Hitachinaka, JP;
Hiroyuki Mikami, Hitachinaka, JP;
Seikichi Masuda, Hitachi, JP;
Mamoru Kimura, Hitachi, JP;
Daisuke Kori, Hitachinaka, JP;
Hiroyuki Mikami, Hitachinaka, JP;
Seikichi Masuda, Hitachi, JP;
Mamoru Kimura, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A permanent magnet type rotary electric machine has a rotor having a rotor core and permanent magnets buried into the rotor core by being incorporated into respective permanent magnet slots. The permanent magnet slot per one pole is divided at least into four slots along an outer circumferential direction in the rotor core, and in respective rest core-portions between adjacent divided permanent magnet slots in the rotor core, a width of a first rest core-portion at the middle of each pole and a width of a second rest core-portion between adjacent poles of different polarities are formed larger than that of the others.