Patents by Inventor Richard D. Kienzle

Richard D. Kienzle 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).

  • Thread milling tool
    Patent number: 7959381
    Abstract: A thread milling tool includes a proximal shank portion and a distal cutting portion. The cutting portion includes at least one thread milling tooth and at least one flute oriented helically, or spirally, about a central rotational axis of the tool. The cutting portion may be configured to form internal or external threads in a workpiece as the cutting portion moves relative to the workpiece. The teeth of the thread milling tool have a negative taper angle or back taper to offset deflection of the tool during milling operations.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: June 14, 2011
    Assignee: Kennametal Inc.
    Inventor: Richard D. Kienzle
  • Thread milling tool
    Publication number: 20030231934
    Abstract: A thread milling tool includes a proximal shank portion and a distal cutting portion. The cutting portion includes at least one thread milling tooth and at least one flute oriented helically, or spirally, about a central rotational axis of the tool. The cutting portion may be configured to form internal or external threads in a workpiece as the cutting portion moves relative to the workpiece. The teeth of the thread milling tool have a negative taper angle or back taper to offset deflection of the tool during milling operations.
    Type: Application
    Filed: June 13, 2002
    Publication date: December 18, 2003
    Inventor: Richard D. Kienzle