Expandable pipe liner and method of installing same
US5501248A · kind A · utility
116Cited by
29References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1994 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Jun 23, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/1656
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A liner for lining the interior of subterranean pipes, such as sewers is formed from a seamless, knitted fabric sleeve having a pile construction in which piles extend away from a ground portion of the sleeve, open areas being formed among the ground and piles. A synthetic resin is applied to the fabric sleeve so as to thoroughly impregnate the sleeve. The resin-coated sleeve may be installed in an underground pipe by everting same under fluid pressure. The sleeve has expansion capabilities which permits the resin-impregnated sleeve to be in contact with the interior surface of the pipe for the entire length of the sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.