Patents by Inventor James P. Lawrence

James P. Lawrence 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).

  • Pneumatic tire, rim and run-flat system combination
    Patent number: 4137894
    Abstract: This disclosure relates to a tire and rim combination having run-flat capabilites. These capabilities are provided by a run-flat support system which is comprised of a pneumatic tube member located in the drop center area of the rim and an annular, "free-floating" ring member riding on the tube which contacts only the tube when the tire is operating under normal conditions and only the tube and inner periphery of the tread area of the tire when the tire is run flat.
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: February 6, 1979
    Assignee: The Firestone Tire & Rubber Company
    Inventors: James D. Gardner, James P. Lawrence