Patents by Inventor Kurt R. Dahl

Kurt R. Dahl 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).

  • Self-diluting feedwell including a vertical education mechanism
    Patent number: 6966985
    Abstract: An apparatus and method of diluting a solid particle-containing slurry in conjunction with a sedimentation process. A slurry is introduced into the launder portion of a feedwell and flowed vertically downward through an eductor nozzle having its exit location placed below the liquid level of a volume of clarified liquor. The eductor nozzle is positioned adjacent a diluent inlet such that discharge of the slurry through the eductor nozzle creates a low pressure zone, drawing clarified liquor through the diluent inlet for mixing and dilution of the slurry. A flocculating reagent may additionally be introduced into the diluted slurry for producing a floc and expediting settling of the solid particles.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: November 22, 2005
    Assignee: GL&V Management Hungary KFT
    Inventors: Frederick R. Schoenbrunn, Stephen Hughes, Kurt R. Dahl
  • Self diluting feedwell including a vertical eduction mechanism and method of dilution employing same
    Publication number: 20030173289
    Abstract: An apparatus and method of diluting a solid particle-containing slurry in conjunction with a sedimentation process. A slurry is introduced into the launder portion of a feedwell and flowed vertically downward through an eductor nozzle having its exit location placed below the liquid level of a volume of clarified liquor. The eductor nozzle is positioned adjacent a diluent inlet such that discharge of the slurry through the eductor nozzle creates a low pressure zone, drawing clarified liquor through the diluent inlet for mixing and dilution of the slurry. A flocculating reagent may additionally be introduced into the diluted slurry for producing a floc and expediting settling of the solid particles.
    Type: Application
    Filed: March 5, 2003
    Publication date: September 18, 2003
    Inventors: Frederick R. Schoenbrunn, Stephen Hughes, Kurt R. Dahl