Patents by Inventor Ernst Kühn

Ernst Kühn 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).

  • Letterpress printing machine
    Patent number: 8726805
    Abstract: The letterpress printing machine includes an impression cylinder (8), at least one inking device (11, 12, 13) with an inking train comprising inking rollers (25, 26, 28) and at least one letterpress form cylinder (14, 15, 16) inked by said at least one inking device (11, 12, 13). The at least one letterpress form cylinder (14, 15, 16) is driven by first drive means (30), whereas the at least one inking device (11, 12, 13) is driven by second drive means (31, 32, 33), the second drive means (31, 32, 33) being mechanically independent from the first drive means (30). A control unit is coupled to the second drive means (31, 32, 33) to adjust a circumferential speed of the inking rollers (25, 26, 28) with respect to a circumferential speed of the letterpress form cylinder (14, 15, 16) so as to adjust deposition of ink by the inking device (11, 12, 13) on the letterpress form cylinder (14, 15, 16).
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: May 20, 2014
    Assignee: KBA-Giori S.A.
    Inventors: Manfred Georg Stöhr, Ernst Kühn, Volkmar Rolf Schwitzky, Johannes Georg Schaede