Patents by Inventor Gary Durham

Gary Durham 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).

  • Publication number: 20070063609
    Abstract: An electric motor having a single field rotor wherein the flux within the rotor is generated by magnetic means located at the end regions of the motor housing such that the flux within the motor rotor maintains a constant polarity.
    Type: Application
    Filed: February 17, 2004
    Publication date: March 22, 2007
    Inventors: Gary Durham, Harold Durham
  • Publication number: 20060273681
    Abstract: A starting system and method for starting a salient-poled-rotor electric motor having a stator with a plurality of spaced salient poles, a plurality of field coils of unchanging polarity, and a plurality of armature coils, wherein each field coil of the plurality of field coils at least partially overlaps an armature coil of the plurality of armature coils, and wherein variable excitement of the armature coils alternately creates a magnetic pole force in every other pole of the plurality of spaced salient poles of the stator. In such motors, the stator has a first position, wherein the rotor is in stasis with respect to the stator and torque between the rotor and the stator is substantially minimized, and a second position, wherein torque between the rotor and the stator is substantially maximized. A drive circuit provides current to the field coils and the armature coils. A start circuit is provided for regulating the drive circuit to vibrate the rotor to the second position.
    Type: Application
    Filed: August 8, 2006
    Publication date: December 7, 2006
    Inventors: Gary Durham, Harold Durham