Patents by Inventor Wolfgang Lipphardt

Wolfgang Lipphardt 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).

  • Seal for a reciprocally moving body
    Patent number: 5553872
    Abstract: A seal for a reciprocally moving body that has at least one essentially flat boundary surface extending parallel to its longitudinal axis includes a sealing member that has a first sealing lip formed of polymer material. The first sealing lip extends substantially parallel to the longitudinal axis and abuts the boundary surface. The first sealing lip also has a larger cross-section near a middle portion of the flat boundary surface than in an area of its lateral edges.
    Type: Grant
    Filed: December 2, 1992
    Date of Patent: September 10, 1996
    Assignee: Firma Carl Freudenberg
    Inventors: Anita Gies, Wolfgang Lipphardt, Ulrich W ustenhagen