Patents by Inventor David R. Polakowski

David R. Polakowski 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: 4279504
    Abstract: A xerographic copier having a removable, multifunction paper cassette, the cassette functioning as the copier's paper supply, the copier's exit tray and the copier's single-sheet bypass entry station. The cassette is held at an acute angle to the horizontal, and includes a substantially solid upper wall whose lower portion includes a slot which exposes the paper supply stack's top sheet to paper feed roller means. Paper is fed, one sheet at a time, to a paper path which includes a transfer station and a hot roll fusing station. This paper path traverses a loop, such that the finished copy comes to rest on the solid upper wall of the cassette. The lower portion of this solid upper wall includes a movable paper gate which, when closed, allows multiple copies to be stacked before removal by the operator.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: July 21, 1981
    Assignee: International Business Machines Corporation
    Inventors: Leon C. Brown, Uscoe J. Fitts, David R. Polakowski