Rotary head

Details Rotary head Rotary head

1985-11-01

1987-12-08

Novosad, Stephen J.

Boring or penetrating the earth

With tool drive prime mover or above-ground mechanical...

With installing casing

175173, 175215, E21B 302, E21B 2112

Patent

active

047113103

ABSTRACT:
A rotary head for a drilling machine, the rotary head comprising: lower, intermediate and upper device (1,3 and 61 or 62) for engaging a plurality of drilling tools; a mechanism (8,5) for rotating drilling tools engaged by the engaging devices at a speed which is adjustable; and flushing structure comprising a plurality of flushing apertures (25,44,11 or 52) for supplying flushing fluid to or from drilling tools engaged by the engaging devices.

REFERENCES:
patent: 2327499 (1943-08-01), Burch
patent: 2548463 (1951-04-01), Blood
patent: 3054465 (1962-09-01), Fish
patent: 3157236 (1964-11-01), Arthur
patent: 3259403 (1966-07-01), Hjalsten et al.
patent: 3297100 (1967-01-01), Crews
patent: 3385382 (1968-05-01), Canalizo et al.
patent: 3572449 (1971-03-01), Brocas et al.
patent: 3734212 (1973-05-01), Perlewitz
patent: 3807514 (1974-04-01), Murrell
patent: 4103745 (1978-08-01), Varich et al.

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