Drilling machine

Details Drilling machine Drilling machine

1986-09-02

1987-11-10

Novosad, Stephen J.

Boring or penetrating the earth

With below-ground tool drive prime mover

With means to anchor prime movers support to bore wall

299 31, E21B 402

Patent

active

047051205

ABSTRACT:
A drilling machine for drilling descending large boreholes in earth or rock tructures, comprises an elongated drill pipe driven by a drive machine positioned outside a borehole being drilled, a drill head connected to said pipe and a support device for a drill head. A fluid-supplying device having a descending conduit, supplying fluid from the fluid supplying device to the drill head, is further provided in the drilling machine. A sluice charged with the mixture of the material drilled and the fluid is arranged in the drill head and driven by the drillpipe. The support device is secured in the machine against rotation.

REFERENCES:
patent: 2637527 (1953-05-01), Andrews, Jr.
patent: 4274675 (1981-06-01), Paurat et al.
patent: 4275926 (1981-06-01), Hodges
patent: 4406498 (1983-09-01), Akesaka
patent: 4474253 (1984-10-01), Kleuters
patent: 4543019 (1985-09-01), Shikata

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