Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Wear shield or replaceable wear sleeve
Reexamination Certificate
2008-07-22
2010-11-16
Kreck, John (Department: 3672)
Mining or in situ disintegration of hard material
Cutter tooth or tooth head
Wear shield or replaceable wear sleeve
C299S106000, C299S111000
Reexamination Certificate
active
07832809
ABSTRACT:
In one aspect of the present invention, a degradation assembly comprises a shank with a forward end and a rearward end, the rearward end being adapted for attachment to a driving mechanism, with a shield rotatably attached to the forward end of the shank. The shield comprises an underside adapted for rotatable attachment to the shank and an impact tip disposed on an end opposing the underside. A seal is disposed intermediate the shield and the shank.
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Crockett Ronald
Dahlgren Scott
Hall David R.
Holme Roberts & Owen LLP
Kreck John
Schlumberger Technology Corporation
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