Patents by Inventor David Clifford Riley

David Clifford Riley 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).

  • Publication number: 20010032710
    Abstract: A heat sealing assembly, for sealing thermoplastic film, comprising first and second jaws, an electrical impulse heat sealing element, electrical terminals, and an electrical and thermal insulating material between the first jaw and the heat sealing element, said heat sealing element being removably connected to said electrical terminals, at least one of said jaws being capable of transverse motion and adapted to collapse a tubular film made from said thermoplastic film and passing between said jaws, wherein said element has at each end an electrical contact male plug oriented at about 90 degrees angle from said element, said plugs being parallel to each other and having a shape which allows each to be received in correspondingly shaped sockets, said sockets being held by spring means adapted to apply force in tension to said element when said plugs are in said sockets, said plugs being adapted to fit into said sockets when said spring means are deflected toward said element, and wherein securing means for pr
    Type: Application
    Filed: January 11, 2001
    Publication date: October 25, 2001
    Inventors: James William Sadler, David Campbell King, David Clifford Riley