Patents by Inventor Leonard F. Popkin

Leonard F. Popkin 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).

  • Dampening and inking device for a rotary printing press
    Patent number: 4967657
    Abstract: A water and ink dispenser for a rotary printing press includes a metering roll that is driven by a gear train directly from the printing cylinder, the gears of the gear train each being rotatable on an axis fixed relatively to the axis of rotation of each other gear, in order to avoid chatter and noise in the gear train, a form roll of the device being adjustable relative to the printing cylinder and metering roll entirely independently of said gear train, whereby scuffing and gear marking in the finished print is eliminated.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: November 6, 1990
    Inventor: Leonard F. Popkin