Patents by Inventor Berhard Sich

Berhard Sich 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).

  • Infinitely variable friction gear
    Patent number: 6878091
    Abstract: The invention relates to an infinitely variable friction gear with several frictional wheels which are to transmit via the driving power. The frictional wheels are rotationally mounted in combined axial-radial-bearings (2), which comprises split bearings (3) which are inserted into the supports (4) for the friction wheels (1) and which are rotated at an pivoting axis angle (?) in relation to angle Y. The opposite-lying supports of each gear unit are connected to each other by an upper coupling rod (6) and a lower coupling coupling rod (7).
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: April 12, 2005
    Assignee: ZF Friedrichshafen AG
    Inventors: Berhard Sich, Axel Matheis