Multi-layer pressure pipe of a plastic material
US6787207B2 · kind B2 · utility
12Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2001 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Dec 3, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1393
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to a multi-layer pressure pipe (20) of a plastic material. The multi-layer pressure pipe (20) is formed by using as the extruder an extruder (10) which cross-orients the reinforcement fibers in the extruded material in the successive layers (21,22,23,24), and that the material extruded is a polyolefin which contains long-fiber reinforcements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.