Patents by Inventor C. Roy Herring

C. Roy Herring 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).

  • Spring brake valve
    Patent number: 5284384
    Abstract: A valve assembly for use in conjunction with spring applied, air release parking brakes of the character found in heavy-duty truck-trailers which, in a single valve housing provides system pressure protection, prevents compounding application of the brakes and performs the parking brake release function in an expedicious and highly reliable manner.
    Type: Grant
    Filed: April 17, 1992
    Date of Patent: February 8, 1994
    Assignee: Sealco Air Controls, Inc.
    Inventor: C. Roy Herring