Patents by Inventor John E. Kosko

John E. Kosko 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 transport system with improved gripper bar
    Patent number: 5177541
    Abstract: An apparatus which advances a sheet through a transfer zone and into registration with information developed on a moving member. The sheet is advanced to a position wherein a leading portion thereof is immediately ahead of the transfer zone relative to the forward direction of movement of the moving member and a trailing portion thereof is within the transfer zone. The leading portion of the sheet forms a presentation angle of 7-10 degrees with the horizontal. The trailing portion of the sheet is advanced through the transfer zone at a first velocity and the leading edge of the sheet is advanced in a region immediately ahead of the transfer zone at a second velocity, which is less than the first velocity, so as to create a buckle in the leading portion of the sheet positioned immediately ahead of the transfer zone relative to the forward direction of movement of the moving member.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: January 5, 1993
    Assignee: Xerox Corporation
    Inventors: Vittorio Castelli, James R. Cassano, Richard M. Dastin, John E. Kosko, James D. Apolito, Kenneth G. Christy, Robert J. Tannascoli, Eric A. Merz, Richard J. Laws, Jr., Roger Swanson
  • Sheet transport system with improved registration
    Patent number: 5138399
    Abstract: An apparatus which advances a sheet through a transfer zone and into registration with information developed on a moving member. The sheet is advanced to a position wherein a leading portion thereof is immediately ahead of the transfer zone relative to the forward direction of movement of the moving member and a trailing portion thereof is within the transfer zone. The trailing portion of the sheet is advanced through the transfer zone at a first velocity and the leading edge of the sheet is advanced in a region immediately ahead of the transfer zone at a second velocity, which is less than the first velocity, so as to create a buckle in the leading portion of the sheet positioned immediately ahead of the transfer zone relative to the forward direction of movement of the moving member. The buckle functions to eliminate relative velocity between the photoconductive belt and any portion of sheet within the transfer zone so as to substantially eliminate slip between the sheet and the photoconductive belt.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: August 11, 1992
    Assignee: Xerox Corporation
    Inventors: Vittori Castelli, James R. Cassano, Richard M. Dastin, John E. Kosko
  • Transfer mechanism for a sheet transport system
    Patent number: 5136336
    Abstract: An apparatus is described which advances a sheet in a predetermined path through a transfer zone and into registration with information developed on a moving member. The apparatus charges the sheet to transfer the information from the moving member to the sheet. The apparatus includes a mechanism to maintain the charge on the sheet during advancement thereof.
    Type: Grant
    Filed: July 12, 1991
    Date of Patent: August 4, 1992
    Assignee: Xerox Corporation
    Inventors: Richard M. Dastin, John E. Kosko, Roger M. Swanson
  • Sheet transport system with improved gripping and registration mechanism
    Patent number: 5128726
    Abstract: A sheet transport system having a sheet gripper which includes at least one resilient member used to bias an upper gripping portion toward a lower gripping portion so as to releasably secure the leading edge of a sheet therebetween. The resilient member includes a stop which functions to register the sheet within the sheet gripper.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: July 7, 1992
    Assignee: Xerox Corporation
    Inventors: James R. Cassano, Vittorio Castelli, John E. Kosko, Thomas F. Cooper, Scott C. Durland, Richard M. Dastin, Jan J. van der Steen