Patents by Inventor Rainer Duewelhenke

Rainer Duewelhenke 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).

  • Patent number: 4651937
    Abstract: A light wave conductor or fiber optics is withdrawn from the peripheral groove of a rotating storage disc using a deflection pulley or the like rotating in a plane that runs tangential to a circle through the middle of the groove, a pivotal guide lever for the fiber conductor serves as input for speed control of the disc drive. In case of plural withdrawal equipment, the discs are vertically staggered and overlap.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: March 24, 1987
    Assignee: Frisch Kabel-und Verseilmaschinenbau GmbH
    Inventors: Rainer Duewelhenke, Joachim Meyer