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:
May. 06, 2014
Filed:
Feb. 26, 2007
Kazuhiko Baba, Tokyo, JP;
Hayato Yoshino, Tokyo, JP;
Koji Yabe, Tokyo, JP;
Masahiro Nigo, Tokyo, JP;
Koji Masumoto, Tokyo, JP;
Tomoaki Oikawa, Tokyo, JP;
Yoshio Takita, Tokyo, JP;
Kazuhiko Baba, Tokyo, JP;
Hayato Yoshino, Tokyo, JP;
Koji Yabe, Tokyo, JP;
Masahiro Nigo, Tokyo, JP;
Koji Masumoto, Tokyo, JP;
Tomoaki Oikawa, Tokyo, JP;
Yoshio Takita, Tokyo, JP;
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Abstract
An object is to provide a permanent magnet motor that highly reduces torque fluctuation, thereby reducing noise and vibration. The permanent magnet motor may be formed as follows: a length D of a permanent magnetin a longitudinal direction is the same as or longer than a width A between sides of the magnetic pole toothin the circumferential direction in an end portion of the magnetic pole tooth, and a distance C between tip portions of a pair of the first slitsandwithin the same pole is smaller than the width A between the sides of the magnetic pole toothin the circumferential direction in the end portion of the magnetic pole tooth. The permanent magnet motor, thus formed, may be characterized in that cut surfacesface the first slitsand