Patents by Inventor William B. Wheless

William B. Wheless 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).

  • Shutoff and exhaust valve for air brakes
    Patent number: 3972341
    Abstract: A shutoff and exhaust valve for tractor-trailer air brake systems operates to open or close communication between the tractor and trailer service lines in accordance with the pressure in the tractor emergency line and the trailer service line is exhausted to atmosphere through the same valve.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: August 3, 1976
    Assignee: Midland-Ross Corporation
    Inventor: William B. Wheless