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:
Apr. 25, 2006
Filed:
Jun. 25, 2004
Haruyuki Kometani, Tokyo, JP;
Shinichi Yamaguchi, Tokyo, JP;
Tomohiro Kikuchi, Tokyo, JP;
Takashi Tamura, Tokyo, JP;
Haruyuki Kometani, Tokyo, JP;
Shinichi Yamaguchi, Tokyo, JP;
Tomohiro Kikuchi, Tokyo, JP;
Takashi Tamura, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A permanent magnet rotating machine includes a rotor with a permanent magnet having circumferential magnetic poles with a skew at boundaries between magnetic poles of the permanent magnet, and a stator having a stator iron core in an almost cylindrical shape and convex poles protruding inwardly, the rotor being disposed within the stator. A skew angle of the skew is smaller than a theoretical angle θ(electrical angle) and larger than one-half the theoretical angle θ, wherein the theoretical angle θis defined as,θ=180×(number of magnetic poles in the rotor)/smallest integer of which both the number of magnetic poles in the rotor and the number of magnetic poles in the stator are factors) [deg.].