Trenchless replacement of smaller diameter lateral pipe sections

Details Trenchless replacement of smaller diameter lateral pipe sections Trenchless replacement of smaller diameter lateral pipe sections

1993-04-09

1994-07-12

Corbin, David H.

Hydraulic and earth engineering

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

Repair, replacement, or improvement

405154, F16L 1028

Patent

active

053282973

ABSTRACT:
An apparatus (10) for the trenchless replacement of a pipe comprises a frame section (12) for location above a service pit (22) exposing one end of an underground pipe section (20) to be replaced and an extendable leg member (14) on the frame section (12) for extending into the service pit (22). A support member (18) is provided on the leg member (14) for supporting the leg member (14) against the inside of the service pit (22). A cable guide member (16) is located on the leg member (14) for guiding a pulling cable (36) extending through the pipe section (20) to be replaced up along the leg member (14). A winch (30) is provided on the frame section (12) for exerting a pulling force on the pulling cable (36).

REFERENCES:
patent: 4247222 (1981-01-01), Schosek
patent: 4507019 (1985-03-01), Thompson
patent: 4668125 (1987-05-01), Long
patent: 4685831 (1987-08-01), Mahoney
patent: 4964474 (1990-10-01), Poesch
patent: 5192165 (1993-03-01), Torielli

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