Patents by Inventor Jan Spjuth

Jan Spjuth 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).

  • Sleeve valve and method for its assembly
    Patent number: 6869063
    Abstract: A sleeve valve device for fluid flow between a hydrocarbon reservoir and a well in the hydrocarbon reservoir comprises a fixed outer sleeve (1) and an inner sleeve (2) which is rotatable in order to bring apertures (3, 4) in the outer sleeve and the inner sleeve into and out of correspondence with each other, for adjustment of the fluid flow through the apertures. The inner sleeve comprises at least one external bulb (5) with a surface (6) which, in an unassembled, unloaded condition of the outer sleeve (1) and the inner sleeve (2), is at a distance (11) from the inner sleeve's centre line (9) which is greater than the outer sleeve's internal radius (r2).
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: March 22, 2005
    Assignee: Triangle Equipment AS
    Inventors: Bengt Gunnarsson, Per Olav Haughom, Jan Spjuth
  • Sleeve valve and method for its assembly
    Publication number: 20030047702
    Abstract: A sleeve valve device for fluid flow between a hydrocarbon reservoir and a well in the hydrocarbon reservoir comprises a fixed outer sleeve (1) and an inner sleeve (2) which is rotatable in order to bring apertures (3, 4) in the outer sleeve and the inner sleeve into and out of correspondence with each other, for adjustment of the fluid flow through the apertures. The inner sleeve comprises at least one external bulb (5) with a surface (6) which, in an unassembled, unloaded condition of the outer sleeve (1) and the inner sleeve (2), is at a distance (11) from the inner sleeve's centre line (9) which is greater than the outer sleeve's internal radius (r2).
    Type: Application
    Filed: October 18, 2002
    Publication date: March 13, 2003
    Inventors: Bengt Gunnarsson, Per Olav Haughom, Jan Spjuth