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:
Dec. 16, 2008
Filed:
Aug. 26, 2004
Yukari Toide, Tokyo, JP;
Akihiro Daikoku, Tokyo, JP;
Masatsugu Nakano, Tokyo, JP;
Hideaki Arita, Tokyo, JP;
Shinichi Yamaguchi, Tokyo, JP;
Moriyuki Hazeyama, Tokyo, JP;
Takashi Yoshioka, Tokyo, JP;
Tomohiro Kikuchi, Tokyo, JP;
Katsumi Hayami, Tokyo, JP;
Takashi Miyazaki, Tokyo, JP;
Yukari Toide, Tokyo, JP;
Akihiro Daikoku, Tokyo, JP;
Masatsugu Nakano, Tokyo, JP;
Hideaki Arita, Tokyo, JP;
Shinichi Yamaguchi, Tokyo, JP;
Moriyuki Hazeyama, Tokyo, JP;
Takashi Yoshioka, Tokyo, JP;
Tomohiro Kikuchi, Tokyo, JP;
Katsumi Hayami, Tokyo, JP;
Takashi Miyazaki, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
In a combination of, for example, a rotor having eight magnetic poles and a stator having twelve slots and pulsating components of permeance, which generate a sinusoidal cogging torque having maxima of the same number as the number of poles of the rotor, pressurizing parts arranged in predetermined positions applying a force at an outer periphery of the stator directed inwardly to cancel the pulsating components of the cogging torque.