Steering mechanism for a subsoil boring apparatus

Details Steering mechanism for a subsoil boring apparatus Steering mechanism for a subsoil boring apparatus

1990-05-25

1991-10-08

Neuder, William P.

Boring or penetrating the earth

Boring without earth removal

175 73, 175135, E21B 1102

Patent

active

050545655

ABSTRACT:
In an apparatus for creating an underground bore hole using high-pressure fluid within a steerable drill string to disturb and displace the subsoil, the improvement of the steering capability of the boring head by the inclusion of a percussive device to hammer the drill string forward after the desired steering of the boring head has take place to cause the boring head to fully engage the media being bored so that upon resumption of normal rotary drilling the boring head will proceed in the selected path.

REFERENCES:
patent: 4387775 (1983-06-01), Adolfsson et al.
patent: 4905773 (1990-03-01), Kinnan

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