Patents by Inventor Raymond C. Hartzell

Raymond C. Hartzell 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).

  • Manufacturing process for making engine components of high carbon content steel using cold forming techniques
    Patent number: 6688148
    Abstract: A method of making high carbon content steel engine components is disclosed. The method includes pre-processing a supply wire of high strength steel having a spheroidized carbide microstructure and high-strength mechanical properties, applying a lubricant on the surface of the supply wire, and cold-forming the blank to substantially reduce or eliminate the need for any additional surface grinding operations.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: February 10, 2004
    Assignee: Defiance Precision Products, Inc.
    Inventors: Raymond C. Hartzell, Jeffrey A. Buck, Stanley Marchewka