Unbonded, flexible pipe
US9012001B2 · kind B2 · utility
3Cited by
49References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2010 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Apr 11, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/139
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to an unbonded, flexible pipe having a length and comprising from inside out, a tubular inner sealing sheath, at least one metal armor layer and an outer sealing sheath of a sealing material. The unbonded, flexible pipe comprises at least one stiffened length section comprising a stiffening cover partially or totally surrounding the outer sealing sheath in the stiffened length section. The stiffening cover comprises a layer of a stiffening material having a flexural modulus which is higher than the flexural modulus of the sealing material, wherein the flexural modulus is determined according to ISO 178.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.