Mining drill

Details Mining drill Mining drill

1982-02-08

1984-05-08

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Plural separable cutter elements

175418, E21B 1062

Patent

active

044469365

ABSTRACT:
In a mine tool of the type having a drive body holding a bit, the drive body includes forwardly projecting flanges each having a bit engaging surface for transmitting torque to the bit and the bit includes an independent means for securing the bit to the drive body against forward separating movement.

REFERENCES:
patent: 3415332 (1968-12-01), Bower, Jr.
patent: 4165790 (1979-08-01), Emmerich
patent: 4356873 (1982-11-01), Dziak
patent: 4368789 (1983-01-01), Orr et al.

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