Patents by Inventor Olf Lehmann

Olf Lehmann 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).

  • Patent number: 5136943
    Abstract: A drive for and a method of driving of a multi-color rotary sheet printing press with a row of printing units comprising more than six printing units and including feed and delivery units and intermediate printing units, wherein all printing units are connected with each other by gear trains, two adjacent intermediate printing units are driven with different torques, and every other intermediate printing unit in a row of intermediate printing units that follows the two adjacent intermediate printing units, is driven with torque that differs from at least one of the two different torques applied to the two adjacent intermediate printing units.
    Type: Grant
    Filed: January 16, 1992
    Date of Patent: August 11, 1992
    Assignee: Planeta - Druckmaschinenwerk Aktiengesellschaft
    Inventors: Kariheinz Fischer, Arndt Jentzsch, Victor Hefftler, Olf Lehmann
  • Patent number: 4974510
    Abstract: A drive for a printing machine with a plurality of printing mechanisms has a closed gear train arranged to connect the printing mechanisms with each other, a drive train extending parallel to the gear train and elastically connected with the latter by at least two power input points, a torsion spring arranged to be located in a trunnion of each of the printing cylinders, at a drive side of the latter, a bush arranged to be mounted in the trunnion of each of the printing mechanisms, and an axially displaceable driver arranged in the bush and form-lockingly engaging the torsion spring.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: December 4, 1990
    Assignee: VEB Kombinat Polygraph "Werner Lamberz Leipzig"
    Inventors: Karlheinz Fischer, Arndt Jentzsch, Olf Lehmann