With Bias Magnet To Position Rotor (e.g., Parking Magnet, Auxiliary Flux) Patents (Class 310/49.03)
Bias magnet positioned between two axially concentric coils (Class 310/49.04)
  • Wireless power transfer using magneto mechanical systems
    Patent number: 8373514
    Abstract: Wireless power transfer is received using a magneto mechanical system. A magneto mechanical system may include an array of magneto-mechanical oscillators, wherein each oscillator may comprise a magnetic symmetrical part and a suspension engaged to the magnetic part. The system may further include a coil formed around the array and electromagnetically coupled to the oscillators to produce an electric current caused by electromagnetic coupling with the oscillators.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: February 12, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Nigel P. Cook, Stephen Dominiak, Hanspeter Widmer
  • Vibration Motor
    Publication number: 20100259114
    Abstract: Disclosed herein is vibration motor. The vibration motor includes a bearing rotatably fitted over a support shaft which is installed to be perpendicular to a base. A hub is coupled to the bearing, with an eccentric member provided on the edge of the hub. A coil is mounted to the hub to form an electric field. A magnet having 2n poles is mounted on the base, and rotates the hub using electromagnetic force between the magnet and the coil. A detent magnet is mounted to the hub and stops the coil in the middle between the poles of the magnet.
    Type: Application
    Filed: August 10, 2009
    Publication date: October 14, 2010
    Inventors: Sang Won KIM, Yong Tae KIM