Patents by Inventor Dale T. Kortepeter

Dale T. Kortepeter 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).

  • Machine for applying roofing material
    Patent number: 4259142
    Abstract: A machine for sealing together adjacent overlying edges of sheets of roofing material having facing bitumen compositions, the machine having a leading shoe for separating the overlying edges, heating jets or burners directed into the opening for softening the facing layers of bitumen material, a trailing guide shoe for guiding the upper sheet into contact with the lower sheet, a second set of heating jets or burners for heating the so joined edge and an adjacent roller for pressing the sheets together while providing uniform flow of the plastic heated bitumen.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: March 31, 1981
    Inventor: Dale T. Kortepeter