Repairing tube, method for repairing pipe lines therewith and method for removing the repairing tube
US5671778A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 1995 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Jan 20, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/0845
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a repairing tube to be used in pipe lines such as gas conduits, water supply lines and sewer lines, chiefly those buried in the ground, for the purpose of repairing the pipe lines. More particularly, the present invention relates to a repairing tube including a rigid pipe formed of thermoplastic resin and a tubular woven fabric and a method for repairing or reinforcing a pipe line with the repairing tube. Furthermore, the present invention relates to a method for removing the repairing tube in its collapsed form out of the pipe line, for example when the repairing tube installed in the pipe line has become superannuated or it has been collapsed for some reason or other to impair the function of the pipe line and hence it is desired to reline the pipe line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.