Patents by Inventor Ralf Tornow

Ralf Tornow 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).

  • Split flap display device
    Patent number: 5477630
    Abstract: A split flap display device for displaying changing information of all kinds, where a substantially tool-free, rapid removal of the complete set of flaps is made possible. For this purpose, the rotor unit includes a rotor shaft, two receiving rollers and split flaps. This entire rotor unit is repetitively connectable and disconnectable with a housing of the display device to allow changes in the information displayed.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: December 26, 1995
    Assignee: Krone-Rew GmbH
    Inventors: Ralf Tornow, Frank Mossner