Patents by Inventor Karl-Johan Lolk Westhoff

Karl-Johan Lolk Westhoff 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).

  • Flexible armoured pipe with a retaining layer of metal elongate strip
    Patent number: 11162618
    Abstract: The present invention relates to a flexible armoured pipe having a centre axis and including an internal pressure sheath and an outer sheath, where the radial distance between the internal pressure sheath and the outer sheath defines an annulus. The annulus includes at least one tensile armour layer surrounded by at least one retaining layer constituted by an elongate metallic strip wound around the at least one tensile armour with a winding angle of at least 65° in respect of the centre axis.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: November 2, 2021
    Assignee: NATIONAL OILWELL VARCO DENMARK I/S
    Inventors: Karl-Johan Lolk Westhoff, Jon Moller Andersen
  • A FLEXIBLE ARMOURED PIPE WITH A RETAINING LAYER OF METAL ELONGATE STRIP
    Publication number: 20190162334
    Abstract: The present invention relates to a flexible armoured pipe having a centre axis and including an internal pressure sheath and an outer sheath, where the radial distance between the internal pressure sheath and the outer sheath defines an annulus. The annulus includes at least one tensile armour layer surrounded by at least one retaining layer constituted by an elongate metallic strip wound around the at least one tensile armour with a winding angle of at least 65° in respect of the centre axis.
    Type: Application
    Filed: July 5, 2017
    Publication date: May 30, 2019
    Inventors: Karl-Johan Lolk Westhoff, Jon Moller Andersen