Patents by Inventor Joel Ardon Litchfield

Joel Ardon Litchfield 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).

  • Cast in joint of aluminum tailspout and stainless steel exhaust pipe
    Patent number: 5720319
    Abstract: The present invention includes a cast in place aluminum tailspout and a stainless steel exhaust pipe. The stainless steel exhaust pipe includes a flared out portion. The cast in place tailspout includes a section that surrounds at least a portion of the flared section of the exhaust pipe and includes a hooked finger for engaging an outwardly extending shoulder of the flared portion.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: February 24, 1998
    Assignee: General Motors Corporation
    Inventors: Ralph Wayne Smith, Lloyd Charles Kendall, David Lynn Penfield, Robert James Ezze, Joel Ardon Litchfield