Lining of pipelines or passageways
US4581085A · kind A · utility
37Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1983 |
| Grant date | Apr 8, 1986 |
| Priority date | — |
| Expiry date | Sep 7, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L58/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention provides that a tubular lining, suitable comprising an inner felt layer soaked in curable synthetic resin, and an outer impermeable layer, so everted into a pipeline or passageway by means of a gaseous fluid medium which holds the lining against the passageway surface, a pull tape or card which is inside the lining and emerges from the everting face so that tension can be applied thereto, and a lubricating medium inside the everted portion to enable the inwardly travelling uneverted portion to slide over the previously everted portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.