Drilling head

Details Drilling head Drilling head

1981-03-05

1983-08-09

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

With fluid conduit lining or element

175410, E21B 1060

Patent

active

043973620

ABSTRACT:
A drilling head of the claw-type which eliminates the need for a pilot bit. The configuration to be described hereandafter causes the drill head to run more smoothly and straighter than those claw-type drills having a pilot. The structure includes a threaded stem portion for threadedly affixing the drilling head to a drive source, a platform extending from the stem portion upon which plural drill bits are affixed on a top face thereof in which the platform is formed from three sectors of pyramid shape, and the recess on the top face of the sectors is provided with further bits for cutting outside of the drill head itself.

REFERENCES:
patent: 2634955 (1953-04-01), Johnson
patent: 2836408 (1958-05-01), Barrett
patent: 2915291 (1959-12-01), Gulfett
patent: 3720273 (1973-03-01), McKenry et al.

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