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:
Jan. 13, 2015
Filed:
Aug. 19, 2011
Mao Xiong Jiang, Shenzhen, CN;
Yue LI, Hong Kong, CN;
Tao Zhang, Shenzhen, CN;
San Ruan Xiao, Shenzhen, CN;
Lik Hon Chan, Hong Kong, CN;
Mao Xiong Jiang, Shenzhen, CN;
Yue Li, Hong Kong, CN;
Tao Zhang, Shenzhen, CN;
San Ruan Xiao, Shenzhen, CN;
Lik Hon Chan, Hong Kong, CN;
Johnson Electric S.A., Murten, CH;
Abstract
A brushless motor has a stator and a rotor rotatably installed inside of the stator. The stator includes a stator core with teeth protruding inwardly and windings wound on the teeth. The rotor includes a shaft, a rotor core fixed on the shaft, and a ring magnet fixed to the circumferential outer surface of the rotor core. The magnet includes a plurality of magnetic poles radially magnetized so that north poles and south poles are arranged alternately in the circumferential direction. Boundary lines between magnetic poles are skewed by an angle relative to an axis of the shaft.