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:
Jun. 11, 2002
Filed:
Dec. 08, 2000
Philippe François Espinasse, Bihorel, FR;
Coflexip, , FR;
Abstract
This one-piece subsea flexible multilayer tubular pipe comprises a carcass ( ) made of interlocked metal strip, an inner sealing sheath ( ) made of a polymer material, a winding of an interlocked metal element ( ) wound in a helix with a short pitch, at least one ply ( ) of tensile armor layers wound with a long pitch around the pressure vault, where appropriate at least one thermal insulation layer ( ) and an outer protective sealing sheath ( ); this pipe has, over its length, sections intended for regions of different use and the physical characteristics of at least one of the layers are modified at manufacture over at least one section of the length of the pipe, without modifying the outside diameter of the said layer, so as to tailor the properties of the pipe in this section to the conditions for the zone in which it will be used.