Patents by Inventor Trevor John Blohm

Trevor John Blohm 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).

  • Multimode electrically variable transmission having a ferrite magnet motor and method of operating the same
    Patent number: 8602938
    Abstract: A hybrid vehicle includes an internal combustion engine, a ferrite magnet motor and a rare earth magnet motor. When the vehicle is cruising at a steady speed, an electrically variable transmission mode of a transmission configures the rare earth magnet motor to provide a reaction force to the ferrite magnet motor so that the ferrite magnet motor operates at a high speed/low torque condition to minimize torque dependent losses in the ferrite magnet motor. When the vehicle is accelerating at higher speeds, a first torque transmitting mechanism provides a reaction torque to the ferrite magnet motor to eliminate the torque dependent losses in the ferrite magnet motor.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: December 10, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Brendan M. Conlon, Khwaja M. Rahman, Trevor John Blohm, Sinisa Jurkovic