Patents by Inventor Harry G. P. Burt

Harry G. P. Burt 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).

  • Parking brake control system
    Patent number: 4645271
    Abstract: A parking brake control device has a differential area shuttle valve which has an outlet connected to a brake actuator and a larger area of a poppet directed to an inlet connected to a control valve for applying a parking brake pressure and a smaller area of the poppet facing a second inlet connected to a service brake pressure such that in the event of simultaneous application of parking brake and service brake pressures the shuttle valve will be moved to close off the inlet to the service brake pressure while introducing park brake pressure to the brake cylinder.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: February 24, 1987
    Assignee: Knorr-Bremse AG
    Inventors: Nicholas J. Brearey, Harry G. P. Burt