Thermal insulation device for at least one underwater pipe...

Pipes and tubular conduits – Distinct layers – With intermediate insulation layer

Reexamination Certificate

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Details

C138S108000, C138S112000, C138S113000

Reexamination Certificate

active

07069957

ABSTRACT:
The present invention concerns a device for heat-insulating at least one sub-marine pipe. The sub-marine pipe includes a heat insulation covering including a material subject to migration, the covering surrounding the pipe and being covered by a sealed protective envelope having a tubular shape and a longitudinal axis of symmetry. The envelope being constituted by a flexible or semi-rigid material able to remain in contact with the external surface of the insulation covering when the latter warps. The device includes at least two sealed transversal partitions, each being constituted by a closed rigid piece traversed by and integral with the pipe and with the envelope.

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patent: 3952777 (1976-04-01), Uhlig
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patent: 25 18 940 (1976-11-01), None
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patent: 2 263 752 (1993-08-01), None
patent: WO 00/40886 (2000-07-01), None
US 6,513,577, Feb. 2003, Baylot et al., 165/45, (withdrawn).

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