Patents by Inventor Bjorn Legarth

Bjorn Legarth 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).

  • Throttle valve for injecting a fluid into geological formations
    Patent number: 7640992
    Abstract: A throttle valve (10), in particular for injecting a fluid into a geological formation, is described, which comprises a valve body (10) having a piston chamber (11), an annular piston (20) having a fluid channel (21), which extends from a high-pressure side (H) to a low-pressure side (L) of the throttle valve, with the annular piston (20) being displaceable within the piston chamber (11) and the fluid channel (21) being transmissive or closed depending on the position of the annular piston (20) in the piston chamber (11), and a cover plate (12) which is provided on the high-pressure side of the valve body (10) and through which the fluid channel (21) protrudes from the high-pressure side piston chamber (11), wherein the fluid channel (21) is closed in axial direction with a sealing disk (22) which can be rested tightly on the cover plate (12) on the high-pressure side, and the fluid channel (21) has a radial throttle opening (23) adjacent to the sealing disk (22).
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: January 5, 2010
    Assignee: Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum-GFZ
    Inventors: Andreas Jurczyk, Peter Otto, Oliver Kastner, Björn Legarth
  • Throttle valve for injecting a fluid into geological formations
    Publication number: 20070295512
    Abstract: A throttle valve (10), in particular for injecting a fluid into a geological formation, is described, which comprises a valve body (10) having a piston chamber (11), an annular piston (20) having a fluid channel (21), which extends from a high-pressure side (H) to a low-pressure side (L) of the throttle valve, with the annular piston (20) being displaceable within the piston chamber (11) and the fluid channel (21) being transmissive or closed depending on the position of the annular piston (20) in the piston chamber (11), and a cover plate (12) which is provided on the high-pressure side of the valve body (10) and through which the fluid channel (21) protrudes from the high-pressure side piston chamber (11), wherein the fluid channel (21) is closed in axial direction with a sealing disk (22) which can be rested tightly on the cover plate (12) on the high-pressure side, and the fluid channel (21) has a radial throttle opening (23) adjacent to the sealing disk (22).
    Type: Application
    Filed: June 7, 2007
    Publication date: December 27, 2007
    Applicant: GeoForschungsZentrum Potsdam
    Inventors: Andreas Jurczyk, Peter Otto, Oliver Kastner, Bjorn Legarth