Patents by Inventor Keith A. Spencer

Keith A. Spencer 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).

  • Contact tip for an electrode of a resistance welder
    Publication number: 20100252536
    Abstract: A contact tip used with the electrode of a resistance welder. The contact tip includes a bore that has an insert of blended tungsten and copper inserted therein. Prior to insertion of the insert into the bore, the bore is lined with a composition containing silver. A brazing process can be utilized to enhance attachment of the insert to the contact tip.
    Type: Application
    Filed: March 30, 2010
    Publication date: October 7, 2010
    Inventors: Keith A. Spencer, Clay Donaldson, Thomas M. Fogh
  • Contact tip for an electrode of a resistance welder
    Publication number: 20100252535
    Abstract: A contact tip used with the electrode of a resistance welder. The contact tip includes a bore that has an insert of blended tungsten and copper inserted therein. Prior to insertion of the insert into the bore, the bore is lined with a composition containing silver. A brazing process can be utilized to enhance attachment of the insert to the contact tip.
    Type: Application
    Filed: April 6, 2009
    Publication date: October 7, 2010
    Inventors: Keith A. Spencer, Clay Donaldson, Thomas M. Fogh, Richard Allan Haaff