Cutting means for drag drill bits

Details Cutting means for drag drill bits Cutting means for drag drill bits

1985-07-26

1986-08-19

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175339, 175409, 175410, E21B 1056, E21B 1060

Patent

active

046064184

ABSTRACT:
A rotary drill bit (10) having a plurality of diamond cutting elements (48) each having a cutting face (60) with a discharge nozzle (64) therein. The discharge nozzle (64) directs the flow of drilling fluid away from the cutting face (60) and is surrounded by the cutting face (60).

REFERENCES:
patent: 1388490 (1921-08-01), Suman
patent: 4303136 (1981-12-01), Ball
patent: 4334585 (1982-06-01), Upton
patent: 4452324 (1984-06-01), Jurgens
patent: 4494618 (1985-01-01), Radtke
patent: 4498549 (1985-02-01), Jurgens

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