Patents by Inventor Per-Christian Irgens

Per-Christian Irgens 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).

  • Patent number: 9314910
    Abstract: Dynamical flange clamp for strengthening flange couplings or taking over the bolt forces in a loaded flange coupling, where opposite clamps (1, 2) are preloaded towards each other, contraholders (3) are fitted on one of the clamps (2), functioning as back stop to absorb the preload. When installed on a flange connection the gasket stress is kept virtually constant during the transfer of forces between the flange coupling bolts and the flange clamp. This is done without any further adjustments to the dynamical flange clamp. The dynamic flange clamp is particularly useful during bolt changes in a Hot Bolting operation.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: April 19, 2016
    Inventor: Per-Christian Irgens
  • Publication number: 20100244443
    Abstract: Dynamical flange clamp for strengthening flange couplings or taking over the bolt forces in a loaded flange coupling, where opposite clamps (1, 2) are preloaded towards each other, contraholders (3) are fitted on one of the clamps (2), functioning as back stop to absorb the preload. When installed on a flange connection the gasket stress is kept virtually constant during the transfer of forces between the flange coupling bolts and the flange clamp. This is done without any further adjustments to the dynamical flange clamp. The dynamic flange clamp is particularly useful during bolt changes in a Hot Bolting operation.
    Type: Application
    Filed: March 25, 2010
    Publication date: September 30, 2010
    Inventor: Per-Christian Irgens
  • Patent number: D714629
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: October 7, 2014
    Assignee: Irgens Engineering AS
    Inventor: Per-Christian Irgens
  • Patent number: D714630
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: October 7, 2014
    Assignee: Irgens Engineering AS
    Inventor: Per-Christian Irgens