Cutting tool wear sleeves and retention apparatuses

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Clamped tooth holder or tooth mount

Reexamination Certificate

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Details

C299S104000

Reexamination Certificate

active

11504182

ABSTRACT:
Cutting tool assemblies and wear and retention sleeves. The assemblies may include a support block that has a sleeve-receiving hole therethrough and a cutting tool that has an elongated shank. Various configurations of sleeves are disclosed for supporting the elongated shank of the cutting bit in the support block. Such sleeve embodiments may be provided with a plurality of axially extending overlapping notches to establish segments of various degrees of interference fit between the sleeve and the support block when seated in the sleeve-receiving hole of the support block. Some sleeve embodiments are configured to permit the shank of a cutting bit to freely rotate therein. Other sleeve embodiments are configured to prevent rotation of the cutting bit shank when inserted therein.

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