Patents Assigned to Fairchild Semiconductor Incorporated
  • Motor rotor and a motor having the same
    Patent number: 8384262
    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.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: February 26, 2013
    Assignee: Fairchild Semiconductor Incorporated
    Inventors: Shih-Jen Yang, Hung-Sen Tu, Chen-Chia Yang
  • MOTOR ROTOR AND A MOTOR HAVING THE SAME
    Publication number: 20110309705
    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.
    Type: Application
    Filed: June 17, 2010
    Publication date: December 22, 2011
    Applicant: FAIRCHILD SEMICONDUCTOR INCORPORATED
    Inventors: Shih-Jen Yang, Hung-Sen Tu, Chen-Chia Yang