Patents by Inventor Roger H. Lilley

Roger H. Lilley 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).

  • Friction forming
    Patent number: 5469617
    Abstract: A method of forming a plug-like member comprises placing a consumable member (4) in a bore (1) of a workpiece (2). The consumable member (4) is rotated relative to the workpiece (2) while they are urged together so as to generate frictional heat and the formation of plasticised material (5). The plasticised material (5) is allowed to solidify so as to form a plug-like member having an outer surface conforming to the inner surface of at least part of the bore (1). The plug-like member is either left in situ or, following formation of the complete plug-like member, removed from the workpiece.
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: November 28, 1995
    Assignee: The Welding Institute
    Inventors: Wayne M. Thomas, Edward D. Nicholas, Stephen B. Jones, Roger H. Lilley, Christopher J. Dawes, Richard E. Dolby