Holder for a degradation assembly

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Wear shield or replaceable wear sleeve

Reexamination Certificate

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Details

C299S107000

Reexamination Certificate

active

07338135

ABSTRACT:
In one aspect of the invention, a degradation assembly has an attack tool with a body and a shank, the body having a wear-resistant tip. The shank is disposed within a bore of a holder secured to a driving mechanism. The bore of the holder comprises an inner surface comprising a hardness greater than 58 HRc.

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