Lining of pipelines and passageways
US4581247A · kind A · utility
56Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1984 |
| Grant date | Apr 8, 1986 |
| Priority date | — |
| Expiry date | Dec 27, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1007
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides that in the lining of a pipeline or passageway using a flexible lining comprising a resin absorbent felt, the felt is impregnated with a light curing resin, and light radiation is used for effecting the resin cure. The resin and felt are selected so as to be of a similar refractive index, and so that the resin and fibres are substantially transparent to the curing light radiation which is used. The lining is pre-impregnated and then contained a bag, envelope or sachet of opaque material to prevent it from curing prematurely.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.