Lining of pipelines with a flexible lining including a heat curable resin by curling in stages
US6354330B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1995 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Mar 10, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F2003/065
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of lining an existing pipeline or passageway with a lining tube of a resin absorbent material impregnated with a curable synthetic resin is provided. A lining tube inserted into the pipeline and urged by pressure against the pipeline or passageway surface and heat is applied is stages to lengths of the lining tube by isolating a length of the uncured flexible lining from the remainder of the lining tube by expanding an expansible and contractible member inside the lining. A heated fluid medium is supplied to the isolated length so that the heat cures the resin within the isolated length. The contractible member is contracted and displaced along the length to isolate a new section of the lining tube which is then cured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.