Patents by Inventor Eberhard R. Hellwig

Eberhard R. Hellwig 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).

  • Single shaft sheet advancement mechanism
    Patent number: 4580915
    Abstract: A copysheet incremental feeder apparatus (10) comprising a drive unit (11) operatively connected to a rotor actuating unit (12) which drives a "floating" roller unit (13) rotatably disposed in a roller housing unit (14), whereby the floating roller element (27) produces a positive friction drive on the copysheet (100), regardless of the vertical disposition of the roller unit (13) within the housing (14).
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: April 8, 1986
    Inventor: Eberhard R. Hellwig