Patents by Inventor Charles P. Mottram

Charles P. Mottram 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).

  • Tire valve core
    Patent number: 3967639
    Abstract: A tire valve core including a metallic shell having a seat thereon for a plastic gasket, the seat extending between a peripheral bead including a perpendicular wall portion on the inner face thereof and an annular rib having an inwardly tapered peripheral surface and a perpendicular shoulder on the inner face thereof; the seat being provided with a plurality of annular grooves spaced inwardly from said rib and extending over approximately 50% of the seat width and with the remainder of the seat providing an inwardly tapered smooth surface.
    Type: Grant
    Filed: January 2, 1975
    Date of Patent: July 6, 1976
    Assignee: National Distillers and Chemical Corporation
    Inventor: Charles P. Mottram