Patents by Inventor William Joseph Tefet

William Joseph Tefet 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).

  • Plastic pipe butt fusion machine and cart assembly
    Patent number: 5843271
    Abstract: An assembly is provided for butt fusing lengths of plastic pipe in axial relationship. The assembly includes a cart having a chassis and wheels, the chassis having a longitudinal axis defined by the direction of movement of the cart in a straight line. A butt fusion machine having a frame, a first clamp and a second clamp thereon, is removably positioned on the cart. Each clamp is adapted to releasably secure the end portion of a length of thermoplastic pipe so that thereby the frame has a plane of orientation along which lengths of pipe extend when secured by the clamps.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: December 1, 1998
    Assignee: TDW Delaware, Inc.
    Inventors: Bill Dean Andrew, Richard Leroy Goswick, Paul Michael Hatch, William Joseph Tefet