Patents by Inventor Frederick D. Browne

Frederick D. Browne 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).

  • Motor winding insulation resistance monitoring system
    Patent number: 4766387
    Abstract: A motor winding insulation resistance monitoring system for measuring the insulation resistance of a winding of a polyphase motor while the motor is operating including a motor winding insulation resistance measuring circuit. A switching mechanism is provided for selectively interconnecting each winding with a separate phase power source and the winding insulation resistance measuring circuit. The switching mechanism is directed to disconnect a winding from its power source and connect one end of that winding with the motor winding insulation measuring circuit to measure the resistance of that winding's insulation to ground while the motor continues operating.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: August 23, 1988
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Frederick D. Browne, Fred E. Sevier