Patents by Inventor Harwin Laumann

Harwin Laumann 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 unit for an offset printing machine
    Patent number: 5680815
    Abstract: A dampening unit for an offset printing machine having an applicator roller including a central section and two oppositely disposed tapered end sections to prevent the transference of excessive amounts of dampening medium to the printing plate is disclosed. The boundaries between each of the end sections and the central section of the applicator roller are located adjacent predetermined regions defined on the plate cylinder to ensure a uniform dampening medium film is produced across the entire format width of the material to be printed.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: October 28, 1997
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Harwin Laumann, Karl-Peter Klein, Wolfgang Rozek, Peter Hummel, Robert Ortner