Inversion liner and liner components for conduits
US6837273B2 · kind B2 · utility
16Cited by
20References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2003 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Apr 24, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/006
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Inversion liners are provided which in a first embodiment include first and second flexible fabric layers joined to first and second glass fiber containing layers and joined in tubular form, whereby the first and second flexible fabric layers face one another. The second glass fiber containing layer further is bonded to a thin, third flexible fabric layer. A substantially fluid impermeable layer is applied to the opposite side of the thin, third flexible fabric layer. This method and liner construction can save one or more steps in the manufacture of glass-reinforced, polyester felt liners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.