Patents by Inventor Helmut Birkenmayer

Helmut Birkenmayer 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: 4141544
    Abstract: A folding triangle made of sheet metal is formed with a central opening through which a deformation roller, for example having teeth for perforation, or an edge for creasing of the paper web traveling over the folding triangle, is secured. A counter roller suitably shaped with respect to the deformation roller is located above the folding triangle, to be engaged by the deformation roller. The rollers are longitudinally as well as height adjustable. The apparatus is preferably associated with paper webs traveling through a printing machine.
    Type: Grant
    Filed: September 1, 1977
    Date of Patent: February 27, 1979
    Assignee: Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft
    Inventor: Helmut Birkenmayer