Patents by Inventor Peter V. Comrie

Peter V. Comrie 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).

  • Power circuit for electromagnetic actuator
    Patent number: 4607311
    Abstract: A power supply circuit for an electromagnetic actuator includes a first capacitor and a charging circuit for charging the first capacitor from a second capacitor. A unidirectional switch is operable to discharge the first capacitor into the actuator winding. A second unidirectional switch is operable to provide holding current from a low voltage source of supply to maintain the winding energized. A diode provides energy recovery when the actuator is de-energized.
    Type: Grant
    Filed: June 8, 1983
    Date of Patent: August 19, 1986
    Assignee: Lucas Industries public limited company
    Inventors: Robert H. Brown, Peter V. Comrie