Method for reconstructing corroded pipes
US5887627A · kind A · utility
2Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1997 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Jun 6, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/1654
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for reconstructing corroded pipes is disclosed in which a long, new pipe can be inserted smoothly and without excessive force, into an older pipe. The method involves the insertion of a new pipe into an old pipe using a dolly to transfer the reaction force. The tail end of the new pipe is attached to the dolly, and the front end of the new pipe is sealed off. A plug is inserted into the dolly from the tail end of the new pipe, which is filled with pressurized water. The dolly is then moved in the direction of the old pipe to insert the new pipe into the old pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.