Patents by Inventor Peter William Pledger

Peter William Pledger 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).

  • Injection welding apparatus
    Patent number: 4087508
    Abstract: A mould for injection welding a junction between a thermoplastics sleeve and a cable having an outer sheath of thermoplastics material, which mould comprises three parts: one part is heat-conductive with a bore for receiving the end of the cable; one part is heat-insulating with a bore for receiving the sleeve, and the final part is heat-conductive with an enlarged bore for surrounding the actual joint. When the mould is assembled, this final part receives the ends, at least, of the other two parts and prevents relative axial and radial movement between the mould parts.
    Type: Grant
    Filed: January 3, 1977
    Date of Patent: May 2, 1978
    Assignee: The Post Office
    Inventors: William George Frederick Slaughter, Peter William Pledger, John Patrick Auriole Lowry