The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 2021
Filed:
Jul. 05, 2017
Applicant:
National Oilwell Varco Denmark I/s, Brondby, DK;
Inventors:
Karl-Johan Lolk Westhoff, Holte, DK;
Jon Moller Andersen, Gorlev, DK;
Assignee:
NATIONAL OILWELL VARCO DENMARK I/S, Brondby, DK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L 11/08 (2006.01); F16L 11/16 (2006.01); E21B 17/20 (2006.01);
U.S. Cl.
CPC ...
F16L 11/083 (2013.01); E21B 17/20 (2013.01); F16L 11/16 (2013.01);
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.