Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Clamped tooth holder or tooth mount
Reexamination Certificate
2007-11-27
2007-11-27
Kreck, John (Department: 3673)
Mining or in situ disintegration of hard material
Cutter tooth or tooth head
Clamped tooth holder or tooth mount
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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Kirkpatrick & Lockhart Preston Gates & Ellis LLP
Kreck John
LandOfFree
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