Pipes, based on polyamide and polyolefin, for gas transmission and/or distribution
US6616191B2 · kind B2 · utility
6Cited by
35References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1997 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Mar 9, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L11/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention relates to pipes for the transmission and/or distribution of combustible gases, and liquefied gases, comprising a polyethylene layer and a polyamide inside and/or outside layer. These pipes may advantageously be connected together by adhesively bonded sleeves and thus form medium-pressure and low-pressure gas distribution and transmission networks or else they may be installed inside already existing metal pipes.These pipes may be manufactured by coextrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.