Flexible tubular pipe with an internal impervious polymeric sheath
US5934335A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1997 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Sep 29, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L11/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
It is of the type comprising at least, from the interior towards the exterior, an internal non-impervious metal carcass (1), the exterior surface of which has interstices (9), an internal impervious polymeric sheath (2), a set of layers of reinforcement wires (3) (4), and an external protection sheath (5), and is characterized in that said internal impervious polymeric sheath (2) mainly comprises a thermoplastic polymer part associating at least two fluoromonomers, at least one of said fluoromonomers carrying at least one alkoxy group, the thermoplastic polymer part being blistering-resistant at a temperature of at least 130.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.