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. 02, 2013
Filed:
Dec. 11, 2008
Yuichi Yoshikawa, Osaka, JP;
Hiroshi Murakami, Osaka, JP;
Atsuyoshi Koshiba, Tottori, JP;
Koji Kadowaki, Tottori, JP;
Haruki Kato, Tottori, JP;
Yasuo Kunishige, Tottori, JP;
Yuichi Yoshikawa, Osaka, JP;
Hiroshi Murakami, Osaka, JP;
Atsuyoshi Koshiba, Tottori, JP;
Koji Kadowaki, Tottori, JP;
Haruki Kato, Tottori, JP;
Yasuo Kunishige, Tottori, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A motor comprises a stator having a plurality of magnetic poles disposed at first predetermined intervals along an outer periphery thereof, and a rotor having a permanent magnet with poles magnetized alternately to have different polarities at second predetermined intervals and disposed rotatably around the outer periphery of the stator with a predetermined gap. The magnetic poles of the stator has extended portions formed in a manner to extend from magnetic polar bases into a direction generally parallel to the permanent magnet, and the extended portions are formed of a high-permeability magnetic steel sheet with silicon content less than 3.0 wt-%.