Patents by Inventor Friedhelm Söffge

Friedhelm Söffge 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).

  • Washer element for a wheel bolt and/or wheel nut of a motor vehicle wheel
    Patent number: 6478521
    Abstract: A washer element for a wheel bolt and/or a wheel nut of a motor vehicle wheel is mounted with one end partially in a rounded cavity of a mounting hole for the wheel and the wheel bolt is supported on the other end of the element. The washer element consists of a sleeve part with an end area formed so that it is rounded, whereby in cross section the sleeve part itself has a profiled wall with a sleeve expansion and/or a sleeve contraction.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: November 12, 2002
    Assignee: Dr. Ing. h.c.F. Porsche AG
    Inventors: Jan Tschunko, Friedhelm Söffge