Roof drill bit with radial domed PCD inserts

Details Roof drill bit with radial domed PCD inserts Roof drill bit with radial domed PCD inserts

1995-06-07

1996-07-16

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

175320, 175434, E21B 1056, E21B 1060

Patent

active

055358390

ABSTRACT:
A rotary drill bit having a head portion with at least two hard surfaced inserts having domed working surfaces and being oppositely oriented to face in the direction of rotation at positive rake angles, and a mounting adapter for removably securing the drill bit to a drilling machine.

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