Rotary drill guard assembly and method

Details Rotary drill guard assembly and method Rotary drill guard assembly and method

1988-06-10

1989-12-26

Massive, IV, Jerome W.

Boring or penetrating the earth

Processes

Boring horizontal bores

175203, 175219, 175220, E21B 700, E21B 1908

Patent

active

048891932

ABSTRACT:
A guard assembly for encasing drive rods during below ground horizontal drilling is illustrated as including a tube positionable by an adjustable tube guide, which remains stationary during drilling, an expandable tube having a smaller diameter for telescoping into the larger tube, means attaching the smaller tube to the rotary drill power source for substantial encasement of the drive rod during drilling.

REFERENCES:
patent: 3078933 (1963-02-01), Orner
patent: 3298448 (1967-01-01), Kull
patent: 3651872 (1972-03-01), Smith, Jr. et al.

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