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:
Oct. 08, 2002
Filed:
Feb. 27, 2001
Applicant:
Inventors:
Mamoru Kimura, Hitachi, JP;
Haruo Koharagi, Taga-gun, JP;
Hiroyuki Mikami, Hitachinaka, JP;
Miyoshi Takahashi, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/27 ;
U.S. Cl.
CPC ...
H02K 1/27 ;
Abstract
The present invention provides a permanent magnet rotating electric machine comprising a stator, a rotor having a rotor core and permanent magnets inserted into the rotor core, wherein the permanent magnets are shaped like an arc convex toward the stator and a flat surface facing toward the stator is provided at a tip end portion of each of the teeth of the stator. With such configuration, the distortion factor of the waveform of an induced voltage in the permanent magnet rotating electric machine.