Double-sheath pipe for transporting fluids, provided with a...

Pipes and tubular conduits – Plural duct – Coaxial

Reexamination Certificate

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Details

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).

REFERENCES:
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patent: 3768209 (1973-10-01), Punter et al.
patent: 4364629 (1982-12-01), Lang et al.
patent: 4364692 (1982-12-01), Kyriakides et al.
patent: 5433252 (1995-07-01), Wolf et al.
patent: 5458441 (1995-10-01), Barry
patent: 5803127 (1998-09-01), Rains
patent: 5821452 (1998-10-01), Neuroth et al.
patent: 6143988 (2000-11-01), Neuroth et al.
patent: 6167915 (2001-01-01), Collie et al.
patent: 6651700 (2003-11-01), Bastard et al.
patent: 2795806 (2001-01-01), None
patent: 2795807 (2001-01-01), None
patent: 2804197 (2001-07-01), None
patent: 1383527 (1975-02-01), None

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