Patents by Inventor James R. Loudon

James R. Loudon 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: 4455938
    Abstract: The present invention relates to a dampening apparatus for lithographic offset printing presses. A form roller having an ink receptive compressible surface is pressed against a plate on the plate cylinder, and a metering means lying parallel and tangent to the form roller having a relatively incompressible ink receptive surface is pressed against the form roller. A reservoir of dampening solution is maintained above the nip of the form roller and metering roller, and is automatically maintained. Rotation of the form roller results in a metered quantity of solution being fed to the form roller, a portion of that quantity being applied to the lithographic plate, and the excess of that quantity being returned to the supply.
    Type: Grant
    Filed: February 7, 1983
    Date of Patent: June 26, 1984
    Assignee: Graph Tech Inc.
    Inventor: James R. Loudon