Flexible heat-insulated pipe-line for in particular cryogenic fluids
US4417603A · kind A · utility
76Cited by
7References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1981 |
| Grant date | Nov 29, 1983 |
| Priority date | — |
| Expiry date | Feb 2, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B27/34
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A fluid-conveying, flexible, lagged pipe for building up in particular a liquefied natural gas carrying pipe-line connecting an off-shore platform for working submarine oil fields or like underwater pools to a tanker ship and comprising an inner tubular duct including an inner helical metal spring, an intermediate layer of yielding composite material and an outer helical metal spring like the inner spring but longitudinally offset by half a pitch of turns with respect to the latter so that the turns of said outer spring be nested between those, respectively, of said inner spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.