Steerable rock boring head for earth boring machines

Details Steerable rock boring head for earth boring machines Steerable rock boring head for earth boring machines

1974-08-14

1976-03-23

Brown, David H.

Boring or penetrating the earth

Means traveling with tool to constrain tool to bore along...

175 61, 175 62, 175122, 175173, E21B 708

Patent

active

039454436

ABSTRACT:
A portable earth boring machine for the horizontal boring of shafts and the insertion of pipeline casing sections in installations where excavation from the surface is undesirable. The machine is characterized by a steering head particularly adapted for rock drilling operations which head is positioned at the front of the casings and remotely controlled by the machine operator so as to directionally control the direction of extension of the pipeline as the drilling operation progresses.

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patent: 3326008 (1967-06-01), Baran et al.
patent: 3354969 (1967-11-01), Ebeling
patent: 3415329 (1968-12-01), Marlind
patent: 3526285 (1970-09-01), Adkins et al.
patent: 3743034 (1973-07-01), Bradley
patent: 3767836 (1973-10-01), Geis et al.
patent: 3797589 (1974-03-01), Kellner et al.
patent: 3848685 (1974-11-01), Takagi et al.

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