Patents by Inventor Manfred Straub

Manfred Straub 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).

  • Method and apparatus for regulating ink distribution in an undershot inking unit of a printing machine
    Patent number: 5566613
    Abstract: An undershot inking unit and associated method are disclosed. The undershot inking unit includes an ink fountain roller that is controlled independently of the printing speed of the printing machine, and in which the rotational contact angle of the distributor roller on the ink fountain roller is varied according to the printing unit speed. The method comprises controlling the rotational speed of the ink fountain roller independently of the printing speed of the printing machine; and varying the rotational contact angle of the intermittent ductor roller on the ink fountain roller according to the printing speed of the printing machine. In a preferred embodiment, the apparatus includes two coaxial cams rotatably adjustable with respect to each other. Each cam includes a predominant circumferential contour and a subordinate circumferential contour.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: October 22, 1996
    Assignee: MAN Roland Druckmaschinen
    Inventors: Achim Stoffler, Valentin Gensheimer, Edgar Werber, Marc Hinz, Peter Hummel, Jurgen Wenzel, Albrecht Volz, Joachim Blumor, Hubert Zschetzsche, Manfred Straub
  • Method and apparatus for regulating ink distribution in an undershot inking unit of a printing machine
    Patent number: 5493970
    Abstract: An undershot inking unit and associated method are disclosed. The undershot inking unit includes an ink fountain roller that is controlled independently of the printing speed of the printing machine, and in which the rotational contact angle of the distributor roller on the ink fountain roller is varied according to the printing unit speed. The method comprises controlling the rotational speed of the ink fountain roller independently of the printing speed of the printing machine; and varying the rotational contact angle of the intermittent ductor roller on the ink fountain roller according to the printing speed of the printing machine. In a preferred embodiment, the apparatus includes two coaxial cams rotatably adjustable with respect to each other. Each cam includes a predominant circumferential contour and a subordinate circumferential contour.
    Type: Grant
    Filed: May 3, 1994
    Date of Patent: February 27, 1996
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Achim Stoffler, Valentin Gensheimer, Edgar Werber, Marc Hinz, Peter Hummel, Jurgen Wenzel, Albrecht Volz, Joachim Blumor, Hubert Zschetzsche, Manfred Straub
  • Apparatus for cleaning a roller nip in rotary printing machines
    Patent number: 5379696
    Abstract: An apparatus for cleaning a roller nip in rotary printing machines, which is filled with a fluid, includes at least one nozzle arranged above the liquid in the nip with the nozzle oriented at an angle (.alpha.) with respect to the longitudinal direction of the nip so as to be directed towards the fluid. Blowing air is fed to the nozzle via a control valve and causes the fluid to flow along the nip and off at least one end of the rollers.
    Type: Grant
    Filed: July 1, 1993
    Date of Patent: January 10, 1995
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Andreas Boehme, Peter Mayer, Arno Gartner, Jurgen Heinen, Manfred Straub