Patents by Inventor Gordon R. Dunning

Gordon R. Dunning 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).

  • Sheet feeder for typewriters
    Patent number: 4277059
    Abstract: An improved sheet paper feed apparatus for a printing apparatus having a platen for holding and providing at least longitudinal motion to a sheet of paper. The sheet feed apparatus comprises a rectangular tray including a rear paper support portion and a spaced apart forward paper support portion, the portions for supporting thereon the opposite ends of a stack of paper. A shingler wheel is positioned intermediate the support portions for engaging the lowermost sheet of the paper sheet stack, and the shingler wheel is rotated in a first direction to move the lowermost sheet of the stack away from the forward support portion until the lowermost sheet is no longer supported thereby, and then in the opposite direction to drive the lowermost sheet beneath the forward paper support portion, the forward paper support portion comprising in the preferred embodiment a pair of inwardly projecting, spaced apart fingers.
    Type: Grant
    Filed: March 18, 1980
    Date of Patent: July 7, 1981
    Assignee: International Business Machines Corporation
    Inventor: Gordon R. Dunning
  • Duplex attachment for a printer
    Patent number: D356816
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: March 28, 1995
    Assignee: Lexmark International, Inc.
    Inventors: Daniel P. Cahill, Gordon R. Dunning, Michael C. Leemhuis, Steven A. Silverstein, Daniel J. Westhoff, Edward W. Yohon, Jr.