Patents by Inventor Kenneth B. Shartzer

Kenneth B. Shartzer 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).

  • Pipe beller with force determined temperature
    Patent number: 4276010
    Abstract: A method and apparatus for belling a plastic pipe wherein the pipe is heated until a predetermined force can move the pipe onto a mandrel; the magnitude of the force being such that the pipe is heated to a temperature between its memory temperature and its breakdown temperature.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: June 30, 1981
    Assignee: Plastic Machinery Corporation
    Inventor: Kenneth B. Shartzer