Patents by Inventor Gustav Kvalvaag

Gustav Kvalvaag 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).

  • Method and device for moving subsea rocks and sediments
    Patent number: 6966132
    Abstract: A method for moving subsea rocks and sediments which can be at significant depths, in connection with removal of protective rocks around installations where maintenance is to be conducted. Tubing with an ejector nozzle is arranged completely externally in relation to the tubing on a standard, remote controlled submarine (ROV), so that the ejector nozzle produces a pressure gradient through the tubing. An inlet end of the tubing is located with the rocks and sediments to be moved, which are sucked into the tubing and blown out of the opposite end of the tubing.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: November 22, 2005
    Assignee: GTO Subsea AS
    Inventors: Tom Jacobsen, Terje Fagervold, Gunner Fagervold, Gustav Kvalvaag
  • Method and device for subsea dredging
    Patent number: 6868625
    Abstract: Method and device for moving subsea rocks and sediments, particularly at significant depths, for example in connection with removal of protective rocks around subsea installations where maintenance is to be conducted. The device includes a rigid or at least partly flexible tubing thorough which masses may be transported with the aid of a pressure gradient produced by an ejector nozzle arranged externally in relation to the tubing, and fed with water from a water pump. The device further includes a chassis adapted to be transported along the sea bottom. The required power is supplied through a cable from the surface, while the tubing preferably is remotely controlled by a manipulator.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: March 22, 2005
    Assignee: Fossura AS
    Inventors: Tom Jacobsen, Terje Fagervold, Gunnar Fagervold, Gustav Kvalvaag
  • Method and device for subsea dredging
    Publication number: 20030121182
    Abstract: Method and device for moving subsea rocks and sediments, also at significant depths, e.g. in connection with removal of protective rocks around subsea installations, where maintenance is to be conducted. The device comprises a rigid or at least partly flexible tubing (5) thorough which the masses (14) may be transported with the aid of a pressure gradient produced by an ejector nozzle (11) arranged externally in relation to said tubing. The nozzle (11) is fed with water from a water pump (12). The device further comprises a chassis (F) adapted to be transported along the (sea) bottom. The required power is arranged to be supplied through a cable (3) from the surface, while the tubing (5) preferably is arranged to be remotely controlled by a manipulator (9, 9″).
    Type: Application
    Filed: December 2, 2002
    Publication date: July 3, 2003
    Inventors: Tom Jacobsen, Terje Fagervold, Gunnar Fagervold, Gustav Kvalvaag