Patents by Inventor Robert J. Keith

Robert J. Keith 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).

  • Patent number: 3946784
    Abstract: In the case of a retreading operation a conventional symmetrical tire casing is prepared for retreading by buffing the outer peripheral or crown portion of the casing and the outer peripheral portions of both side wall portions of the casing adjoining the crown portion are also buffed. In addition, one side wall portion of the casing is buffed to a point closely adjacent the bead portion thereof and the buffed portions of the tire casing then have cement applied thereto in a conventional manner prior to the application of a retread rubber strip or strips to the cemented portions of the buffed tire casing. Thereafter, the tire casing, with the retread rubber applied thereto is cured in the usual manner.
    Type: Grant
    Filed: June 11, 1974
    Date of Patent: March 30, 1976
    Inventor: Robert J. Keith