Internal wrapping method and apparatus
US4415390A · kind A · utility
15Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1981 |
| Grant date | Nov 15, 1983 |
| Priority date | — |
| Expiry date | Nov 12, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C63/32
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for internally wrapping the surface of a conduit, cylinder or pipeline with a sealing membrane which is adhered to the interior surface. The apparatus applies the membrane in a helical spiral by taking the membrane from a roll and pressing it against the interior surface while applying an adhesive and while transporting the roll longitudinally in the conduit on a transport assembly that rolls internally in the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.