Patents by Inventor Erich Michael Zahn

Erich Michael Zahn 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: 6135445
    Abstract: The sheet-stacking apparatus stacks sheets arriving in a stream of successive sheets. A stop face configuration is pivotable, about a geometric pivot axis located at a predetermined level and oriented crosswise to the stream, between a working position wherein it stops the sheets and a position that is pivoted away from it. The system enables accurate, straight-edged stacks, both in the successive buildup of one stack and in the formation of a succeeding stack without interrupting the stream of sheets. In a first variant a carrier profile is provided, which is located above the pivot axis in the working position and past which, in the working position, stop face segments protrude downward in comblike fashion. In a second variant, a carrier profile with auxiliary stops protruding past it is disposed, adjustable in height, below the pivot axis.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: October 24, 2000
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Peter Gamperling, Erich Michael Zahn
  • Patent number: 6000695
    Abstract: A device for the transport and deposit of sheets in a stacking region is provided. The device includes pneumatic guiding elements below the conveying path and extending across the entire width. A chain-conveyor system and a pneumatic conveyor system following the chain-conveyor system are provided. The devices also provides for selectable paths to plural delivery positions.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: December 14, 1999
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Richard Burkhard Mack, Erich Michael Zahn
  • Patent number: 5921179
    Abstract: A guard for contrarotatable cylinders of a printing press includes a finger protective element disposable adjacent cylindrical surfaces of the cylinder for guarding a nip between the cylinders in vicinity of a danger zone, the finger protective element being in fixed position and having at least one switch sensor disposed in the region of the cylinder nip.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: July 13, 1999
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Manfred Gang, Erich Michael Zahn
  • Patent number: 5669755
    Abstract: The invention relates to a device for the non-stop operation of a delivery unit of a rotary printing machine in which sheets in a flow of sheets are collated into individual stacks supported on a stack base with a surface interrupted by grooves and in which auxiliary stacks are borne by grid rods together forming a rack until their transfer to the stack base, the grid rods penetrating into the grooves during transfer. To prevent the stacks from being hampered by their weight, according to the invention a receiving plate catching the auxiliary stack from below is laid upon the grid rods in their reception position.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: September 23, 1997
    Assignee: Heidelberger Druckmaschinen AG
    Inventor: Erich Michael Zahn