Patents by Inventor Robin B. Carter

Robin B. Carter 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: 5228186
    Abstract: An electro-fusion pipe coupler includes an outer shell and an electric resistance heating coil secured therein by an intervening layer of injection moulded thermoplastic material. The coupler is made by winding the wire onto a core which consists of two separable parts inserting the core into the tubular shell, attaching contacts to the wire ends and inserting them into holes provided in the shell, and injecting molten material into the space defined between the core and the shell to form the layer. For injecting the material the core parts define therebetween radial runners connected to a central sprue inlet and opening at respective outlets spaced around the core.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: July 20, 1993
    Assignee: Fusion Plastics Ltd.
    Inventors: David Brettell, Russell J. Kirk, Robin B. Carter, David M. A. Kenworthy
  • Patent number: 5163713
    Abstract: An electro-fusion pipe coupler includes an outer shell and an electric resistance heating coil secured therein by an intervening layer of injection moulded thermoplastic material. The coupler is made by winding the wire onto a core which consists of two separable parts, inserting the core into the tubular shell, attaching contacts to the wire ends and inserting them into holes provided in the shell, and injecting molten material into the space defined between the core and the shell to form the layer. For injecting the material the core parts define radial runners therebetween connected to a central sprue inlet and opening at respective outlets spaced around the core.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: November 17, 1992
    Assignee: Fusion Group plc
    Inventors: David Brettell, Russell J. Kirk, Robin B. Carter, David M. A. Kenworthy