Patents by Inventor Roy E. Palmer

Roy E. Palmer 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).

  • Continuous foamed-in-place door panel manufacturing process
    Patent number: 4746383
    Abstract: An improved continuous automated method of manufacturing insulated door panels is provided. The process includes a step of continuously connecting discrete first skin segments end to end by means of flexible joints to form a string of first skin segments and then conveying the string to a foamable liquid injecting station. In a preferred embodiment, a polyethylene film is applied to the string in order to contain foamable liquid in event of a gap caused by separation of a flexible joint.
    Type: Grant
    Filed: April 17, 1987
    Date of Patent: May 24, 1988
    Assignee: Overhead Door Corporation of Texas
    Inventors: Howard A. Bacon, Roy E. Palmer