Flexible pipe for great depths

Details Flexible pipe for great depths Flexible pipe for great depths

1998-12-18

2000-04-25

Hook, James

Pipes and tubular conduits

Flexible

Spirally wound material

138121, 138131, 138134, 138138, 138139, F16L 1116

Patent

active

060532130

ABSTRACT:
It is of the type comprising a corrugated and sealed internal metal tube (1), a pressure vault (2) wound at a short pitch and having an internal surface which faces the corrugations of the corrugated internal tube, an intermediate sheath, at least two groups of inner and outer armoring layers (3, 5), the armoring layers being wound at a lay angle of less than 55.degree., and an outer-sheath (6), and it is characterized in that the intermediate sheath (4) is sealed and is arranged between the two groups of armoring layers (3, 5), the said inner group of armoring layers (3) bearing directly on the pressure vault (2).

REFERENCES:
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patent: 4344462 (1982-08-01), Aubert et al.
patent: 4403631 (1983-09-01), Abdullaev et al.
patent: 4427033 (1984-01-01), Ege
patent: 4867205 (1989-09-01), Bournazel et al.
patent: 5176179 (1993-01-01), Bournazel et al.
patent: 5269349 (1993-12-01), Sugier et al.
patent: 5307842 (1994-05-01), Legueux
patent: 5645109 (1997-07-01), Herrero et al.
patent: 5813439 (1998-09-01), Herrero et al.
patent: 5934335 (1999-08-01), Hardy

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