Patents by Inventor Andreas Gorton-Hulgerth

Andreas Gorton-Hulgerth 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 for controlling operation of a flotation cell
    Patent number: 7296682
    Abstract: A method for controlling operation of a flotation cell, where the liquid level and the foam level in the cell are measured and controlled. The method includes measuring at least one quality characteristic of the accept leaving the cell and determining the set value(s) for the liquid level and/or the foam level on the basis of the measured quality characteristic. The method is particularly suitable for flotation of a pulp suspension, particularly in deinking flotation.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: November 20, 2007
    Assignee: Andritz AG
    Inventors: Helmuth Gabl, Andreas Gorton-Hülgerth, Erwin Hertl
  • Plate or plate segment and device with such plates or plate segments
    Publication number: 20070029424
    Abstract: In plates or plate segments, e.g. in dispersing devices, circular elevations (9) and depressions (10) are provided in an arc-shaped arrangement. At least some of the elevations (9) form a continuous circular arc. This not only results in gentler fiber treatment due to the shearing forces being applied gently by means of friction, but also in the entire pulp suspension being dispersed, beaten/refined or deflaked more effectively.
    Type: Application
    Filed: August 3, 2006
    Publication date: February 8, 2007
    Inventors: Andreas Gorton-Hulgerth, Josef Glawogger
  • Process and device to disperge a recycled fibre pulp
    Publication number: 20060108083
    Abstract: The invention relates to a process for disperging a recycled fibre pulp, where a pre-dewatered pulp is heated, conveyed, and disperged in a disperger. It is mainly characterised the recycled fibre pulp being heated immediately before entering the disperging zone. In addition, the invention refers to a device for implementing the process.
    Type: Application
    Filed: March 27, 2003
    Publication date: May 25, 2006
    Inventors: Helmuth Gabl, Andreas Gorton-Hulgerth
  • Process for controlling operation of a flotation cell
    Publication number: 20040200778
    Abstract: A method for controlling operation of a flotation cell, where the liquid level and the foam level in the cell are measured and controlled. The method includes measuring at least one quality characteristic of the accept leaving the cell and determining the set value(s) for the liquid level and/or the foam level on the basis of the measured quality characteristic. The method is particularly suitable for flotation of a pulp suspension, particularly in deinking flotation.
    Type: Application
    Filed: March 9, 2004
    Publication date: October 14, 2004
    Inventors: Helmuth Gabl, Andreas Gorton-Hulgerth, Erwin Hertl
  • Refiner
    Patent number: 6637686
    Abstract: A refiner including a rotor and a stator defining a cylindrical or conical refining gap therebetween. A pulp feed channel extends in a radial direction from an inlet pipe to the refining gap.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: October 28, 2003
    Assignee: Andritz AG
    Inventors: Peter Antensteiner, Helmuth Gabl, Andreas Gorton-Hülgerth, Gerald Schadler
  • Refiner
    Publication number: 20010020660
    Abstract: A refiner including a rotor and a stator defining a cylindrical or conical refining gap therebetween. A pulp feed channel extends in a radial direction from an inlet pipe to the refining gap.
    Type: Application
    Filed: February 2, 2001
    Publication date: September 13, 2001
    Inventors: Peter Antensteiner, Helmuth Gabl, Andreas Gorton-Hulgerth, Gerald Schadler