Patents by Inventor John Joseph Krieg

John Joseph Krieg 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).

  • Roller finger follower shaft retention apparatus
    Patent number: 6302075
    Abstract: A roller finger follower (RFF) wherein the shaft of the roller bearing is restrained in the follower finger by the overhead cam. Ends of the shaft are positioned in place in the follower finger by notches formed in the side walls of the follower finger. The notches restrain the shaft from axial movement. The cam in position over the RFF keeps the shaft nested in the notches. Further restraining means are disclosed to keep the shaft loosely nested in the notches in the follower finger before the cam is installed in position.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: October 16, 2001
    Assignee: Delphi Technologies, Inc.
    Inventors: John Joseph Krieg, John Joseph Burns, Nick John Hendriksma
  • Carbon and alloy steels thermochemical treatments
    Patent number: 6235128
    Abstract: The present invention is a unique sequential process for treating carbon and alloy steels to improve resistance to tribological stresses while reducing conventional processing time required to obtain articles having a similar hardness. This process comprises carburizing or carbonitriding the article, tempering the carburized or carbonitrided article, net-shaping (machining) the tempered article, and plasma (ion) nitriding the tempered article for a significantly reduced period of time versus conventional plasma (ion) nitriding.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: May 22, 2001
    Inventors: John C. Chang, John Joseph Krieg, Richard Blanco Roe, Steve Stormzand, Tony Wu, Lynn Lu, Jeffrey W. Kunitzer