Patents by Inventor David George Staines

David George Staines 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).

  • REFRACTORY METAL TOOL FOR FRICTION STIR WELDING COMPRISING A SHOULDER MADE OF TUNGSTEN, MOLYBDENUM, TANTALUM, NIOBIUM OR HAFNIUM ALLOY AND A COATED OR TREATED SURFACE
    Publication number: 20100279146
    Abstract: A tool for friction stir welding or forming is provided. The tool comprises a shoulder portion (40b) and optionally a pin portion (5Ob)l the shoulder portion (40b) comprised of at least 60% by weight and up to 100% by weight of tungsten, molybdenum, tantalum, niobium or hafnium, the balance being alloying materials, if used. The tool has at least one surface treatment or coating. Articles welded by the tools are also provided.
    Type: Application
    Filed: August 15, 2007
    Publication date: November 4, 2010
    Applicant: H.C. Starck Ltd.
    Inventors: Charles E.D. Rowe, Jonathan R. Tuck, David George Staines, Wayne Morris Thomas