Patents by Inventor Herman Roosevelt Mitchell

Herman Roosevelt Mitchell 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).

  • Auxiliary motor drive system
    Patent number: 5847470
    Abstract: An auxiliary motor drive system including a driving device and an auxiliary motor. The driving device is powered by the engine of a motor vehicle and in turn drives the auxiliary motor. The auxiliary motor in turn drives the drive shaft of the motor vehicle, thus allowing the engine power output to be applied to the vehicle drive shaft while bypassing the vehicle's transmission. The driving device can be a hydraulic pump, a compressor, or an electric generator, while the auxiliary motor is a hydraulic motor, a pneumatic motor, or an electric motor respectively.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: December 8, 1998
    Inventor: Herman Roosevelt Mitchell