Tubular liner for rehabilitating underground and surface pipes and pipelines
US11125375B2 · kind B2 · utility
0Cited by
3References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 30, 2016 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Jun 30, 2036 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2505/20
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A seamless tubular liner for repairing an underground or surface pipe is disclosed, including circumferential wefts consisting of slivers comprising a plurality of staple fibers bundled together, the slivers adapted to elongate through disentanglement of the bundled staple fibers when the seamless tubular liner is subjected to an inflation pressure such that the diameter of the tubular liner is able to expand to accommodate variations of diameter of the pipe being repaired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.