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. 26, 2013
Filed:
Jan. 13, 2011
Hiroaki Kawasaki, Osaka, JP;
Yuichi Yoshikawa, Osaka, JP;
Atsuyoshi Koshiba, Hyogo, JP;
Yasuhiro Inoue, Tottori, JP;
Koji Kadowaki, Tottori, JP;
Yasuo Kunishige, Tottori, JP;
Hiroaki Kawasaki, Osaka, JP;
Yuichi Yoshikawa, Osaka, JP;
Atsuyoshi Koshiba, Hyogo, JP;
Yasuhiro Inoue, Tottori, JP;
Koji Kadowaki, Tottori, JP;
Yasuo Kunishige, Tottori, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The motor comprises a stator, a rotor, and magnets. The stator has a plurality of magnetic poles circumferentially arranged at first spaced intervals. The rotor is rotatably arranged in a position opposing to the stator. The magnets are arranged at second spaced intervals circumferentially on a surface of the rotor. The stator is formed by laminating plate materials, and a plurality of laminated plate materials at least including outermost layers of a laminated body thereof are bent in a direction substantially parallel to the magnet in order to form extended portions. And, when a magnet opposed area of pole tip portion being closest to a magnet including the extended portion is S, and a sectional area of magnetic pole is A, then area ratio (S/A) fulfills the relation of 4.8>(S/A).