Patents by Inventor Karl Hornhofer

Karl Hornhofer 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).

  • Process and device for removing water from a mechanical pulp, chemical pulp or paper sheet
    Patent number: 7090746
    Abstract: A process and apparatus for removing water from a mechanical pulp, chemical pulp or paper sheet, carried between top and bottom wires running through a dewatering machine having a first dewatering zone. The apparatus includes at least one suction box positioned downstream of the first dewatering zone. The process includes generating an air current in at least one of the wires downstream of the first dewatering zone with the suction box. The air current removes water from the wire and directs it into an inner chamber of the suction box. The invention also refers to a device for implementing the process.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: August 15, 2006
    Assignee: Andritz AG
    Inventors: Franz Petschauer, Karl Hornhofer, Thomas Kefer, Dietmar Hausjell, Edgar Brogyanyi, Reinhard Diemat
  • Process and device for removing water from a mechanical pulp, chemical pulp or paper sheet
    Publication number: 20030183355
    Abstract: A process and apparatus for removing water from a mechanical pulp, chemical pulp or paper sheet, carried between top and bottom wires running through a dewatering machine having a first dewatering zone. The apparatus includes at least one suction box positioned downstream of the first dewatering zone. The process includes generating an air current in at least one of the wires downstream of the first dewatering zone with the suction box. The air current removes water from the wire and directs it into an inner chamber of the suction box. The invention also refers to a device for implementing the process.
    Type: Application
    Filed: April 1, 2002
    Publication date: October 2, 2003
    Inventors: Franz Petschauer, Karl Hornhofer, Thomas Kefer, Dietmar Hausjell, Edgar Brogyanyi, Reinhard Diemat
  • Device for removing water from a fibrous material strip
    Patent number: 6616810
    Abstract: A device for dewatering a pulp web having a dewatering section comprising top and bottom wires forming a wedge-shaped dewatering zone which can be adjusted and/or pressure-loaded at the downstream end, and with a pair of press rolls mounted at the end of the bottom wire. The top roll of the pair of press rolls is a shoe press roll.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: September 9, 2003
    Assignee: Andritz AG
    Inventors: Edgar Brogyanyi, Karl Hornhofer, Wilhelm Mausser, Franz Petschauer, Johann Sbaschnigg