Patents by Inventor Ken D. Hughes

Ken D. Hughes 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).

  • Ink agitators
    Patent number: 4768438
    Abstract: A rodless linear drive cylinder includes a cylindrical hollow tube, sealed at the ends and containing a pneumatically driven piston. The drive cylinder is so mounted to extend across the ink fountain of a printing machine and includes an ink agitator suspended therefrom into the ink fountain. The agitator is magnetically coupled to the drive piston of the linear drive cylinder.
    Type: Grant
    Filed: April 9, 1986
    Date of Patent: September 6, 1988
    Inventor: Ken D. Hughes