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:
Feb. 26, 2013
Filed:
Jun. 17, 2010
Applicants:
Shih-jen Yang, Taipei, TW;
Hung-sen Tu, Taipei, TW;
Chen-chia Yang, Taipei, TW;
Inventors:
Assignee:
Fairchild Semiconductor Incorporated, Taipei, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 1/27 (2006.01);
U.S. Cl.
CPC ...
Abstract
A motor rotor includes an annular body and a plurality of magnetic bodies installed on an inner lateral surface of the annular body in an irregular manner, to prevent a rotating motor from generating a cogging effect, disperse the frequency of the cogging torque, and reduce the amplitude. Accordingly, noises generated while the motor is operating are reduced, the periodicity of a cogging torque is changed, and cogging torque is reduced.