Patents by Inventor Robert George Wetzel

Robert George Wetzel 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).

  • Lubricant packed wire drawing dies
    Patent number: 4016736
    Abstract: Wire drawing dies having improved life, relatively lower drawing force requirements and producing smooth surface on wires drawn therethrough comprise compacts of polycrystalline diamond, polycrystalline cubic boron nitride and mixtures thereof, which include a centrally-located double tapered hole having micro-rough walls, the micro-rough walls being densely packed with a lubricant for wire drawing.
    Type: Grant
    Filed: June 25, 1975
    Date of Patent: April 12, 1977
    Assignee: General Electric Company
    Inventors: Lynn Cloyd Carrison, Robert George Wetzel