Method for lining a pipe or main

Details Method for lining a pipe or main Method for lining a pipe or main

1987-02-10

1988-10-18

Thronson, Mark J.

Pipes and tubular conduits

Repairing

Patches

F16L 5518

Patent

active

047779845

ABSTRACT:
A method for lining a pipe or main comprising heating a length of synthetic-resin liner pipe 20 of external diameter substantially equal to or greater than the internal diameter of the pipe or main 40 to be lined, mechanically deforming the heated liner pipe 20 to reduce its external diameter to less than the internal diameter of the pipe or main 40 to be lined, causing the liner pipe 20 to enter the pipe or main 40 to be lined and pressurizing the internal wall of the liner pipe 20 to cause it to expand into engagement with the internal wall of the pipe or main 40 to be lined.

REFERENCES:
patent: 3462825 (1969-08-01), Pope et al.
patent: 4233101 (1980-11-01), Scragg et al.
patent: 4273605 (1981-06-01), Ross
patent: 4407888 (1983-10-01), Crofts
patent: 4507019 (1985-03-01), Thompson

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