Insert for a mine tool roof bit and a method of drilling therewi

Details Insert for a mine tool roof bit and a method of drilling therewi Insert for a mine tool roof bit and a method of drilling therewi

1983-05-25

1984-12-25

Pate, III, William F.

Boring or penetrating the earth

Bit or bit element

Plural separable cutter elements

E21B 1700

Patent

active

044897960

ABSTRACT:
A mine tool roof bit insert geometry having a radius of curvature of 1/16 inch at the corners improves the maximum wear and penetration rate when drilling into sandstone and a method therewith is described.

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