Patents by Inventor Terry R Chilson

Terry R Chilson 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).

  • Method of producing a stepped shaft
    Patent number: 7866198
    Abstract: A method for forming a stepped shaft includes: forming a billet of a predetermined mass; heating the billet; cross-wedge rolling the billet to form an intermediate workpiece having a first cylindrical portion and a second cylindrical portion that are axially spaced apart by a neck that is smaller in diameter than the first and second cylindrical portions; and performing at least one upset forging operation on the end of the intermediate workpiece to enlarge the first cylindrical portion such that in at least one location its diameter is larger than a diameter of any other portion of the stepped shaft and larger than a diameter of the billet.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: January 11, 2011
    Assignee: American Axle & Manufacturing, Inc.
    Inventors: Terry R Chilson, Mahaveer P Khetawat, John A Pale
  • METHOD OF PRODUCING A STEPPED SHAFT
    Publication number: 20090241629
    Abstract: A method for forming a stepped shaft includes: forming a billet of a predetermined mass; heating the billet; cross-wedge rolling the billet to form an intermediate workpiece having a first cylindrical portion and a second cylindrical portion that are axially spaced apart by a neck that is smaller in diameter than the first and second cylindrical portions; and performing at least one upset forging operation on the end of the intermediate workpiece to enlarge the first cylindrical portion such that in at least one location its diameter is larger than a diameter of any other portion of the stepped shaft and larger than a diameter of the billet.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 1, 2009
    Inventors: Terry R. Chilson, Mahaveer P. Khetawat, John A. Pale