Patents by Inventor William A. Hendricks

William A. Hendricks 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).

  • Two step phase reset gyro motor power supply
    Patent number: 4339703
    Abstract: A gyro motor supply provides an alternating signal to a gyro hysterisis motor. A detector senses the passage of a reference point on the gyro flywheel during each revolution thereof. A logic circuit is driven by the detector output and controls the phase of the alternating signal thereby ensuring a repeatable gyro start-up condition wherein the phasing is fixed between the reference point on the flywheel and a vector of the rotating field of the motor.
    Type: Grant
    Filed: September 3, 1980
    Date of Patent: July 13, 1982
    Assignee: The Singer Company
    Inventors: William J. Rolff, Samuel Costa, William A. Hendricks