Drill bit with single cutting head

Details Drill bit with single cutting head Drill bit with single cutting head

1977-05-26

1979-05-15

Pate, III, William

Boring or penetrating the earth

With storage means for bit lubricant carried by bit or shaft

With fluid pressure-actuated feed means

175353, 175354, 175367, 175370, E21B 908

Patent

active

041543122

ABSTRACT:
A rotary drill for drilling a well in the surface of the earth the drill comprising a drill bit including an upper portion for connection to a drill string, duct means for carrying fluid to extract detritus and clear the bottom of the well and receiving means; a solid cutting head comprising a conical head portion and a stem portion, the conical head portion including holes therein and cutting elements inserted in the holes, the stem portion being received in the receiving means of the drill bit, wherein the stem and the receiving means include holding means for rotatably holding the cutting head in the drill bit; bearing means between the drill bit and the conical head; and a lubrication system interconnected between the drill bit and the cutting head.

REFERENCES:
patent: 1334632 (1920-03-01), Pickin
patent: 1859948 (1932-05-01), Zublin
patent: 2336335 (1943-12-01), Zublin
patent: 2336337 (1943-12-01), Zublin
patent: 2598518 (1952-05-01), Dufilho
patent: 3193028 (1965-07-01), Radzimovsky
patent: 3476195 (1969-11-01), Galle
patent: 3935911 (1976-02-01), McQueen

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