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:
Jun. 04, 2002
Filed:
Apr. 16, 1999
Chikara Aoshima, Zama, JP;
Hiroaki Maegawa, Machida, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A motor provided with a rotor magnet circumferentially divided into n section which are alternately magnetized to different poles, a coil disposed axially of the rotor magnet, outer magnetic poles and inner magnetic poles excited by the coil being opposed to the outer peripheral surface and inner peripheral surface, respectively, of the rotor, and a holder for holding the rotor magnet at a position at which the centers of the poles of the magnet deviate from a line linking the centers of the outer magnetic poles and the center of rotation of the magnet together when the outer magnetic poles and the inner magnetic poles are not excited, whereby the motor is made into a one-phase motor to thereby stabilize the initial positioning of the rotor and also, the motor is made high in output and super-compact.