Bladderless pipeliner and method for using same
US7845372B2 · kind B2 · utility
14Cited by
80References
43Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2007 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Oct 4, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/265
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A lining apparatus and method is provided that obviates the need for a bladder to press the liner against the host pipe. The lining apparatus may include an extension tube sealed to the liner at one of its ends with an inversion mechanism attached to the other end of the liner for inverting the liner to its desired position within the pipe to be repaired. The lining apparatus can also avoid the use of an extension tube by temporarily closing the liner during the inversion process so that the liner can be inflated when pressurized by a fluid and then sealing an open end of the liner after it has been inverted into the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.