Textile reinforced thermoplastic or thermoset pipes
US6460575B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Jun 5, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/1656
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Novel thermoplastic pipes which can withstand internally generated and/or applied pressures for utilization within, primarily, underground liquid and gas transport systems are provided. Such pipes are improvements over standard metal (i.e., steel, lead, and the like) pipes due to construction costs, shipping costs, implementation costs (particularly underground), flexibility (and thus modulus strength allowances) to compensate for underground movements (i.e., earthquakes and tremors), non-rusting characteristics, reduced crack propagation possibilities, and ease in manufacture. Such pipes are preferably reinforced with specific textile reinforcement materials that permit a lower thickness of plastic to be utilized than is generally required to withstand high pressure situations and also serve to prevent propagation of any cracks which may develop within the thermoplastic or thermoset materials. Such pipes exhibit an elongation at break in relation to that provided by the textile reinforcement and not with regard to the same type of elongation at break characteristic for the thermoplastic or thermoset composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.