Patents by Inventor Udo Steffen

Udo Steffen 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).

  • Telescopic tower
    Patent number: 5314083
    Abstract: A telescopic tower for suspension from an overhang trolley, crane, or the like, have a lowermost tube for carrying a work area or platform, is constructed in that the tubes are of polygonal cross-section with inwardly, as well as outwardly projecting rails in corners of the polygon, rollers on the respective tubes run on these rails.
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: May 24, 1994
    Assignee: Mannesmann AG
    Inventors: Fred Wiggershaus, Udo Steffen, Rudolf Erdmann