Method for widening a hole or a pipe in the ground

Details Method for widening a hole or a pipe in the ground Method for widening a hole or a pipe in the ground

1990-06-19

1993-02-09

Taylor, Dennis L.

Hydraulic and earth engineering

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

405156, F16L 100

Patent

active

051849194

ABSTRACT:
Procedure for the enlargement of the passage of a pipe (2) in the ground (1), according to which procedure this pipe (2) in the ground (1) is pushed open, characterized in that in the pipe (2) at least one high pressure hose (3) is installed, which, in condition filled by fluid under high pressure, is thicker than the inside of the pipe (2), but in another state without this high pressure, can be brought into the pipe, the high pressure hose (3) is put under pressure with fluid under high pressure until the pipe (2) expands after which the pressure of the fluid (4) in the high pressure hose (3) is lowered.

REFERENCES:
patent: 2830443 (1958-04-01), Burrell
patent: 3164964 (1965-01-01), Josephson
patent: 3509725 (1970-05-01), Schnabel
patent: 3665719 (1972-05-01), Whiting
patent: 4124985 (1978-11-01), Maimets
patent: 4487528 (1984-12-01), Skogberg
patent: 4767236 (1988-08-01), Rice
patent: 4770256 (1988-09-01), Lipsker et al.
Europower "Flexible pressure Hose" 1988 (United Kingdom) pp. 11, 14, 15.

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