Patents by Inventor William D. De Santis

William D. De Santis 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).

  • Scraper blades used with print rollers
    Patent number: 4388863
    Abstract: Print rollers are used on a flatbed screen printer to force the ink through the screen. There is provided scraper blades on either side of the roller assembly so that on the return stroke of the roller assembly some of the printing ink is brought back to the lead roller when it starts its movement. This will insure a supply of ink to the lead roller when it moves into the pattern area of the screen thus giving a more uniform ink deposition across the pattern.
    Type: Grant
    Filed: November 23, 1981
    Date of Patent: June 21, 1983
    Assignee: Armstrong World Industries, Inc.
    Inventor: William D. De Santis