Method and apparatus for installing a replacement pipe

Details Method and apparatus for installing a replacement pipe Method and apparatus for installing a replacement pipe

1997-05-12

2000-08-15

Lillis, Eileen Dunn

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Repair, replacement, or improvement

405154, 405156, 138 97, 138 98, 156294, F16L 100, F16L 5516

Patent

active

061026247

ABSTRACT:
A replacement pipe is installed within an existing service pipe (1) by first advancing a sealing means (6,8) along the existing pipe to a position adjacent its junction with a main pipe (2), then deploying the sealing means to seal against the inner surface of the existing pipe) in the example shown, by pumping sealant (10) into the space between the seal body (6) and the pipe (1), and subsequently advancing the replacement pipe along the existing pipe. The space between the two pipes is then filled with sealant and finally the sealing means is opened, in the example shown by withdrawing a guide rod (5) and its collar (7) on which the sealing means was advanced into position.

REFERENCES:
patent: 3616516 (1971-11-01), Corriston
patent: 4456401 (1984-06-01), Williams
patent: 4956032 (1990-09-01), Hahn et al.
patent: 5060696 (1991-10-01), Putter
patent: 5063967 (1991-11-01), Stephens
patent: 5241993 (1993-09-01), Stephens
patent: 5287893 (1994-02-01), Elgar et al.
patent: 5345971 (1994-09-01), Elgar et al.
patent: 5427154 (1995-06-01), Stephens
patent: 5791378 (1998-08-01), Stephens
patent: 5845668 (1998-12-01), Taylor et al.

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