Patents by Inventor Edward E. Urquhart

Edward E. Urquhart 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).

  • Apparatus for mounting flexible plates in a printing unit
    Patent number: 5678487
    Abstract: The present invention is directed to an apparatus for mounting a printing plate on a printing unit cylinder, with the printing unit cylinder having an opening in a clamping area. A lock-up bar is slidably mounted in the opening of the printing unit cylinder, the lock-up bar having an element for retaining at least one edge of a printing plate. A tucking device substantially extends on the clamping area, the tucking device being provided with a protection element and with a plurality of tucking elements arranged over the clamping area and over the width of the printing unit cylinder.
    Type: Grant
    Filed: November 15, 1995
    Date of Patent: October 21, 1997
    Assignees: Heidelberg Harris Inc., Heidelberger Druckmaschinen AG
    Inventors: Glenn Alan Guaraldi, Warren Hess Jarrard, Edward E. Urquhart
  • Distortion-reduced lithographic printing press
    Patent number: 5535674
    Abstract: In a lithographic printing press for printing on material in sheet or web form, a plate cylinder has a printing form mounted thereon. A gapless blanket cylinder is engageable with the plate cylinder and a tubular, removable blanket having a continuous surface is mounted on the blanket cylinder. Mechanisms to expand a cylindrical sleeve are provided as well as mechanisms to reduce cylinder distortion during rotation.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: July 16, 1996
    Assignees: Heidelberger Druckmaschinen AG, Heidelberg Harns, Inc.
    Inventors: James B. Vrotacoe, Charles D. Lyman, Edward E. Urquhart