Cutter for maintaining edge sharpness

Details Cutter for maintaining edge sharpness Cutter for maintaining edge sharpness

2011-01-04

2011-01-04

Stephenson, Daniel P (Department: 3676)

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

C175S432000

Reexamination Certificate

active

07861808

ABSTRACT:
A cutter comprising a base portion, an ultrahard layer disposed on said base portion, and at least one recessed region on an outer surface of the cutter. A start of the recessed region disposed a selected distance behind a cutting face.

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