Device for controlling the orientation of bore holes

Details Device for controlling the orientation of bore holes Device for controlling the orientation of bore holes

1981-02-02

1983-10-04

Novosad, Stephen J.

Boring or penetrating the earth

Automatic control

175 45, 175 61, 175 73, E21B 708

Patent

active

044073747

ABSTRACT:
A device for controlling the inclination of underground bore holes is in form of a drill guide rod having an outer element and an inner element which rotates coaxially in the outer element. Gib-shaped members can be pivoted out from the outer element in the same manner as the ribs of an umbrella, and electrical inclinometers in the rod furnish the signals which control the time and degree of such pivoting.

REFERENCES:
patent: 3243001 (1966-03-01), Vincent
patent: 3841420 (1974-10-01), Russell
patent: 3853186 (1974-12-01), Dahl et al.
patent: 4026371 (1977-05-01), Takada et al.
patent: 4040494 (1977-08-01), Kellner

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