Patents by Inventor Joseph Gordon Blackwell

Joseph Gordon Blackwell 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).

  • Zonal ink fountain blade for a rotary printing press
    Patent number: 5778785
    Abstract: A rotary printing press includes an inking unit with an ink fountain and an ink fountain roller. An ink fountain blade to be disposed in the ink fountain for scraping printing ink from the ink fountain roller includes a base body having a free end region to be associated with the ink fountain roller. The free end region has a plurality of slits formed therein for dividing the free end region zonally into a corresponding number of individual blades and defining zones of contact of the individual blades with the ink fountain roller. A hard-material coating is disposed on the base body in the zones of contact.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: July 14, 1998
    Assignees: Heidelberger Druckmaschinen AG, Heidelberg Harris, S.A.
    Inventor: Joseph Gordon Blackwell
  • Ductor blade for an offset rotary printing press
    Patent number: 5727468
    Abstract: Doctor blade for an offset rotary printing press having an inking unit with an ink duct wherein the ductor blade is provided for, respectively, scraping ink from an ink duct roller and zonally metering an ink film layer thereon over the width of a web of printing material includes a ceramic coating disposed on an edge portion of the blade at a region thereof at which the ink duct roller is in contact therewith.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: March 17, 1998
    Assignees: Heidelberger Druckmaschinen AG, Heidelberg Harris S.A.
    Inventor: Joseph Gordon Blackwell