Patents by Inventor David A. Du Vernay

David A. Du Vernay 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).

  • Apparatus for applying polyurethane layer to tire sidewall
    Patent number: 5573625
    Abstract: A cured rubber tire has adhered thereto a layer of heated and mixed, productive urethane composition fluid sidewall material which has been flowed from a nozzle into a groove in the sidewall of a shaped tire. The tire is rotated under the nozzle a distance equal to the circumferential length of the groove so that the ends of the layer may be joined after which the flow of productive urethane composition sidewall material is terminated.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: November 12, 1996
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: John A. Lovell, Charles L. Makinson, Charles J. Pearson, Robert K. Rossi, David A. Du Vernay