Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Insert or tip mounting feature
Reexamination Certificate
2006-08-11
2008-11-04
Kreck, John (Department: 3672)
Mining or in situ disintegration of hard material
Cutter tooth or tooth head
Insert or tip mounting feature
C299S111000
Reexamination Certificate
active
07445294
ABSTRACT:
In one aspect of the invention, an attack tool is disclosed which comprises a wear-resistant base suitable for attachment to a driving mechanism. The wear resistant base has a shank and metal segment. A cemented metal carbide segment is bonded to the metal segment opposite the shank. At least one hard insert is bonded to the metal segment proximate the shank, wherein the insert has a hardness greater than 60 HRc.
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Crockett Ronald
Hall David R.
Jepson Jeff
Kreck John
Wilde Tyson J.
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