Ground-boring machine

Details Ground-boring machine Ground-boring machine

1997-02-24

1999-11-09

Bagnell, David

Hydraulic and earth engineering

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

Repair, replacement, or improvement

175 22, E21B 1704

Patent

active

059801573

ABSTRACT:
The invention pertains to a machine for producing or widening ground bores and/or for shattering old pipelines and laying new pipelines, consisting of a push-pull unit and a rod assembly that is connected to and driven by the push-pull unit and extends through the ground bore or the pipeline, with projections and/or recesses being arranged on the rod assembly, and with positive coupling means that engage on the projections or in the recesses arranged on the push-pull unit.

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patent: 2788234 (1957-04-01), Doyle
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patent: 2964296 (1960-12-01), Cluff
patent: 3001761 (1961-09-01), Pittman
patent: 3391543 (1968-07-01), Sweeney et al.
patent: 4062412 (1977-12-01), McIlvanie
patent: 5213449 (1993-05-01), Morris

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