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:
Aug. 08, 1989
Filed:
Jan. 04, 1988
Hironobu Sato, Ota, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
A brushless DC motor includes a rotor having a rotor shaft, rotor core and two different magnetic poles disposed around the rotor core, a stator having a circular aperture for receiving the rotor therein and a plurality of magnetic pole teeth consisting of a first tooth, a second tooth and a third tooth disposed on a circumference of the aperture at almost regular intervals. The stator has a first yoke portion for connecting the first tooth and the second tooth, a second yoke portion for connecting the second tooth and the third tooth, a first winding wound on the first yoke portion, a second winding wound on the second yoke portion, and a control device for controlling electrical conduction states of the first winding and the second winding according to the rotational position of the rotor.