Patents by Inventor Frank Stelzhammer

Frank Stelzhammer 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: 6702926
    Abstract: A wire section for forming a multi-ply fiber web. The wire section includes a first belt which advances a first fiber ply toward a couch roll defining a combining section. A twin-wire zone of the wire section includes first and second wires between which a second fiber ply is initially formed in a gap former. The second wire separates from the first wire and then the first wire supporting the second fiber ply meets the first belt supporting the first fiber ply at the couch roll of the combining section to form the multi-ply fiber web. The twin-wire part is arranged upstream of the combining section along the running direction of the first belt. The second fiber ply runs on the first wire into the combining section at an angle less than 90° with respect to the belt entering the combining section. The path of the wires from the forming roll to the combining section is disclosed. A suction box or arrangement holds the second fiber ply to the first wire when the first and second wires separate.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: March 9, 2004
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Dieter Egelhof, Alfred Bubik, Peter Mirsberger, Otto L. Heissenberger, Frank Herzog, Wolf Dieter Baumann, Josef Bachler, Günter Halmschlager, Frank Stelzhammer, Günther Mohrhardt
  • Patent number: 6159341
    Abstract: A wire section for forming a multi-ply fiber web. The wire section includes a first belt which advances a first fiber ply toward a couch roll defining a combining section. A twin-wire zone of the wire section includes first and second wires between which a second fiber ply is initially formed in a gap former. The second wire separates from the first wire and then the first wire supporting the second fiber ply meets the first belt supporting the first fiber ply at the couch roll of the combining section to form the multi-ply fiber web. The twin-wire part is arranged upstream of the combining section along the running direction of the first belt. The second fiber ply runs on the first wire into the combining section at an angle less than 90.degree. with respect to the belt entering the combining section. The path of the wires from the forming roll to the combining section is disclosed. A suction box or arrangement holds the second fiber ply to the first wire when the first and second wires separate.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: December 12, 2000
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Dieter Egelhof, Alfred Bubik, Peter Mirsberger, Otto L. Heissenberger, Frank Herzog, Wolf Dieter Baumann, Josef Bachler, Gunter Halmschlager, Frank Stelzhammer, Gunther Mohrhardt