Patents by Inventor Joseph A. Untener

Joseph A. Untener 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 for manufacturing a swaged piston assembly for an automotive air conditioning compressor
    Patent number: 5218763
    Abstract: A method of forming a composite piston assembly for an automotive air conditioning compressor includes providing 1018 steel alloy, solid connecting rod with an aluminum alloy head. An axial receiving bore is provided in the piston head, which is also fabricated of solid bar stock, and includes a frusto-conically-shaped counterbore. The connecting rod includes a positioning collar that defines a tenon received in said bore. A cold swaged tip of the connecting rod flares outward so as to conform to and fill the counterbore and provide a strong fixed attachment joint between the connecting rod and piston head.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: June 15, 1993
    Assignee: General Motors Corporation
    Inventors: Ronald E. Marker, Daniel A. Rhule, Joseph A. Untener