Patents by Inventor James W. Nickerson

James W. Nickerson 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).

  • Valve guide and method for making same
    Patent number: 4484547
    Abstract: A valve guide for the stem of a valve in an internal combustion engine is provided having an inner bore through which the stem of the valve is longitudinally positioned, the inner bore surface of the body being nitrided in order to harden the body about the surface through which the valve stem is slidably positioned. The body is completely formed prior to installation of the body in the engine valve guide bore.
    Type: Grant
    Filed: January 31, 1984
    Date of Patent: November 27, 1984
    Inventor: James W. Nickerson
  • Valve guide and method for making same
    Patent number: 4342293
    Abstract: A valve guide for the stem of a valve in an internal combustion engine is provided having an inner bore through which the stem of the valve is longitudinally positioned, the inner bore surface of the body being nitrided in order to harden the body about the surface through which the valve stem is slidably positioned. The body is completely formed prior to installation of the body in the engine valve guide bore.
    Type: Grant
    Filed: January 25, 1980
    Date of Patent: August 3, 1982
    Assignee: Teledyne Industries, Inc.
    Inventor: James W. Nickerson