Patents by Inventor John P. Doran

John P. Doran 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).

  • Control system for brushless motors
    Patent number: 4942344
    Abstract: An apparatus and method for controlling the amounts of torque-angle shift in a brushless motor. Various motor parameters are continuously monitored to determine the amount of torque-angle shift to be implemented. In this way only the minimum necessary amount of torque-angle shift is implemented and accordingly, motor control and efficiency is considerably improved.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: July 17, 1990
    Assignee: Moog Ltd.
    Inventors: Francis E. Devitt, John P. Doran, Kevin J. Gaughan