Patents by Inventor Bruce C. Lindahl

Bruce C. Lindahl 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).

  • Free fall simulator
    Patent number: 7153136
    Abstract: A free fall simulator with a flight chamber, a fan system to generate airflow in the flight chamber, and a noise attenuation housing substantially enclosing the fan system.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: December 26, 2006
    Assignee: Aero Systems Engineering, Inc.
    Inventors: Kathryn W. Hatlestad, Bruce C. Lindahl, Kent J. Moses
  • Free fall simulator
    Publication number: 20040115593
    Abstract: A free fall simulator with a flight chamber, a fan system to generate airflow in the flight chamber, and a noise attenuation housing substantially enclosing the fan system.
    Type: Application
    Filed: August 18, 2003
    Publication date: June 17, 2004
    Inventors: Kathryn W. Hatlestad, Bruce C. Lindahl, Kent J. Moses
  • Valve assembly for free piston shock tube/tunnel
    Patent number: 5505081
    Abstract: A free piston shot tube tunnel having a high speed valve for releasing the piston to start the piston shot. A further feature of the present invention is a free piston shock tube/tunnel having a high speed valve for releasing pressure from the compression tube into the shock tube.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: April 9, 1996
    Assignee: Aero Systems Engineering, Inc.
    Inventors: John J. Lacey, Jr., Bruce C. Lindahl
  • Method and apparatus for producing a useful stream of hot gas from a fluidized bed combustor while controlling the bed's temperature
    Patent number: 4433631
    Abstract: Method and apparatus are disclosed for producing a useful stream of hot gas from a fluidized bed combustor and controlling bed temperature by introducing cooling gas into the freeboard region of the combustor. The cooling gas is introduced by a plurality of inlet ports located within the combustion chamber or about its periphery. The cooling gas contacts particulate matter in the freeboard region, extracting heat therefrom. Cooled particulate matter either falls back into the bed or is returned to the bed from a separator downstream of the combustion chamber.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: February 28, 1984
    Assignee: FluiDyne Engineering Corporation
    Inventor: Bruce C. Lindahl