Patents by Inventor Richard G. McCaffrey

Richard G. McCaffrey 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: 5046418
    Abstract: The dampening apparatus and method provides automatic ink/water control for a lithographic printing press by means of a hydrophylic metering roll in a pan for fountain solution which contacts an oleophylic transfer roll. The transfer and metering rolls are free wheeling friction driven rolls which are driven in substantially a one-to-one surface speed ratio by friction between the transfer roll and a dampener form roll to cause the metering roll to provide an unmetered excess of dampening fluid from the pan to a nip with the transfer roll. The dampener form roll is positively driven from the drive system for the press plate cylinder at a one-to-one surface speed ratio with the plate cylinder and is a resilient oleophylic roll having a durometer within the range of 20 to 30 durometer. The transfer roll is harder and of different diameter than the dampener form roll with a durometer in the range of from 30 to 60 durometer.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: September 10, 1991
    Assignee: Dahlgren International, Inc.
    Inventors: James E. Koehler, David W. Paularena, Richard G. McCaffrey