Patents by Inventor Alfred Zielinski

Alfred Zielinski 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: 6003864
    Abstract: A self adjusting jam prevention guide and jam clearance baffle for a printing machine. A moveable guide is attached to a machine subsystem module and is moveable from a first position to a second position. In the first position the guide bridges a gap between the machine subsystem module and a preceding subsystem module. In the second position, the guide is retracted from the gap to allow easy removal of one of the subsystem modules. The moveable guide is preferably self actuated by the use of a biasing device and a ramped section so that the movement of one of the adjacent subsystem modules causes extension and retraction of the guide. A jam clearance aid is further attached to the exit of the machine subsystem module. The clearance aid uses a J-shaped channel to cause a sheet fed into a jammed sheet to buckle and cause both the first jammed sheet and subsequent sheets to be partially ejected from the paper path for easy removal therefrom.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: December 21, 1999
    Assignee: Xerox Corporation
    Inventors: Youti Kuo, Roger C. Male, Anthony G. Poletto, Alfred Zielinski
  • Patent number: 5848347
    Abstract: A compact dual decurler mechanism that provides a single straight paper path for achieving bidirectional decurling capability. The dual decurler mechanism consists of two pairs of drive roll and pinch shaft and a camming mechanism for controlling their engagements. The first and the second pairs are oriented in opposite directions in a manner that they can selectively form opposite bending nips for decurling incoming sheets of different curl directions. The operation of the dual decurler can be software controlled through the use of an electric indexing clutch such that, depending on system inputs on image area coverage and the type of finishing device being used, the first pair can be adjusted for toward image (TI) bending, the second pair for away image (AI) bending, or both be set at a neutral setting that keeps both nips open when no decurling is needed. The architecture of the single straight paper path of the dual decurler can minimize paper jams and avoids potential damage to sheets.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: December 8, 1998
    Assignee: Xerox Corporation
    Inventors: Youti Kuo, Ihor Kulbida, Alfred Zielinski, Steven E. Kolb, Roger C. Male