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:
Jul. 09, 2002
Filed:
Apr. 05, 2001
François Dupoiron, Barentin, FR;
Philippe François Espinasse, Bihorel, FR;
Patrice Jung, La Mailleraye-sur-Seine, FR;
Bernard Jacques Houot, Bouville, FR;
Coflexip, , FR;
Abstract
The invention concerns a flexible tubular pipe comprising, from inside outwards, a web ( ) made of interlocked steel strips, an inner impervious sheath ( ) in polymer material, a short-stepped helical winding of interlocked forming wire ( ) arranged above the internal sheath ( ), at least a hoop ( ) consisting of a short-stepped metal wire winding without interlock, at least a long-stepped tractive armouring layer ( ) wound around the pressure vault and an outer polymer protective and sealing sheath ( ); the sickness (Ef) of the hoop ( ) is greater than the thickness (Ez) of the metal forming wire ( ), preferably by one to three times.