Patents by Inventor Herbert D. Hargrove

Herbert D. Hargrove 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).

  • Braking system for use on a towing vehicle and on a towed vehicle
    Patent number: 5431253
    Abstract: A braking system for use on a towing vehicle and on a towed vehicle comprises a vacuum capture mechanism for capturing vacuum from a towing vehicle. A vacuum delivery mechanism is provided for delivering vacuum to a towed vehicle. A switch mechanism is also provided for allowing controlled transfer of vacuum to a towed vehicle. A vacuum reception mechanism is coupleable with the vacuum delivery mechanism for receipt of vacuum. An air pressure mechanism is adapted to be coupled to a towed vehicle for generating air pressure when actuated. A ram mechanism is coupled to the air pressure mechanism for depressing a brake pedal of a towed vehicle when the air pressure mechanism is actuated. A vacuum switch mechanism is coupled to the vacuum reception mechanism. The vacuum switch mechanism has one orientation for actuating the air pressure mechanism upon receipt of vacuum.
    Type: Grant
    Filed: August 25, 1994
    Date of Patent: July 11, 1995
    Inventor: Herbert D. Hargrove