Patents by Inventor Mojtaba Moi

Mojtaba Moi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Drive circuit for brushless DC motors
    Patent number: 7067998
    Abstract: A drive circuit for brushless DC motors including a rotor and a stator with at least one stator coil includes a commutation device which supplies commutation pulses of drive current to the stator coil(s). The commutation device senses the rotor position and calculates current rotor speed therefrom. The rotor speed is then used to shift the commutation circuits according to predetermined functions. The shifting of commutation currents is occasioned by shifting either or both of the ignition part of a commutation pulse and the extinction part of such pulse.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: June 27, 2006
    Assignee: Papst Licensing GmbH & Co. KG
    Inventors: Arno Karwath, Mojtaba Moi, Eberhard Wünsch
  • Drive circuit for brushless DC motors
    Publication number: 20040239274
    Abstract: A drive circuit for brushless DC motors including a rotor and a stator with at least one stator coil includes a commutation device which supplies commutation pulses of drive current to the stator coil(s). The commutation device senses the rotor position and calculates current rotor speed therefrom. The rotor speed is then used to shift the commutation circuits according to predetermined functions. The shifting of commutation currents is occasioned by shifting either or both of the ignition part of a commutation pulse and the extinction part of such pulse.
    Type: Application
    Filed: October 14, 2003
    Publication date: December 2, 2004
    Applicant: Papst Licensing GmbH
    Inventors: Arno Karwath, Mojtaba Moi, Eberhard Wunsch