Pipes and tubular conduits – Plural duct – Coaxial
Reexamination Certificate
2007-06-26
2007-06-26
Brinson, Patrick (Department: 3754)
Pipes and tubular conduits
Plural duct
Coaxial
C138S112000, C138S113000, C138S172000, C138S148000, C405S168200
Reexamination Certificate
active
10399458
ABSTRACT:
The invention concerns a double-sheath rigid pipe for transporting hydrocarbons consisting of two respectively inner (2) and outer (3) coaxial tubes separated by an annular gap (5), said pipe being adapted to be wound and comprising a device limiting the propagation of a deformation occurring on the outer tube, wherein a radial stop device (10) linked to the inner tube (2) but not linked to the outer tube (3) allows a localized collapse of value G of the outer tube, G being selected to stop the propagation of a deformation of the outer tube (3).
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Bastard Antoine
Bell Mike
Brinson Patrick
Coflexip
Ostrolenk Faber Gerb & Soffen, LLP
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