Method and apparatus for installing underground pipe

Details Method and apparatus for installing underground pipe Method and apparatus for installing underground pipe

2007-04-24

2007-04-24

Singh, Sunil (Department: 3673)

Hydraulic and earth engineering

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

Advancing subterranean length of pipe or cable

C405S174000

Reexamination Certificate

active

11409166

ABSTRACT:
A method and apparatus employing an axially elongated ground piercing tool for forming an in-ground tunnel under a surface structure with forward axial movement of the tool in the ground under the structure with a pipe carried by the tool for depositing in the tunnel after a removal of a tip of the tool and a rearward pulling of the remainder of the tool from the tunnel.

REFERENCES:
patent: 58721 (1866-10-01), Duck et al.
patent: 73688 (1868-01-01), Arnold
patent: 99858 (1870-02-01), Danforth
patent: 1894446 (1933-01-01), McKenny
patent: 0294740 (1988-12-01), None

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