Roof drill bit tip

Details Roof drill bit tip Roof drill bit tip

1994-07-25

1995-07-18

Neuder, William P.

Boring or penetrating the earth

Bit or bit element

Impact or percussion type

E21B 1058

Patent

active

054332818

ABSTRACT:
A roof drill having a drill bit tip including a plurality of equally spaced, V-shaped serrations.

REFERENCES:
patent: 5172778 (1992-12-01), Tibbitts et al.
patent: 5269387 (1993-12-01), Nance

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