Sewer renovation

Details Sewer renovation Sewer renovation

F - Mech Eng,Light,Heat,Weapons

16

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189/12, 61/4.6

F16L 1/00 (2006.01) E03F 3/06 (2006.01) E21B 7/30 (2006.01) F16L 55/165 (2006.01)

Patent

CA 1286887

ABSTRACT An existing underground sewer or other pipe is renovated by rupturing and radially expanding the pipe and installing a replacement pipeline within the ruptured pipe. The pipe is ruptured and radially expanded by introducing a plurality of radially expandable tubular members into the pipe so as to form a liner. Each member is then radially expanded so that the liner engages with and then ruptures the portion of the pipe adjacent thereto. The tubular members may be radially expanded by inflating a bag within the confines of the members.

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