Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Rolling or rotatable bit
Reexamination Certificate
2008-04-22
2008-04-22
Kreck, John (Department: 3672)
Mining or in situ disintegration of hard material
Cutter tooth or tooth head
Rolling or rotatable bit
C299S095000, C072S377000
Reexamination Certificate
active
07360845
ABSTRACT:
A cutting tool body includes a net-shaped steel body that has an axial forward end and an axial rearward end. The net-shaped steel body contains at the axial forward end thereof a cold-headed socket. The net-shaped steel body further contains a cold-headed puller groove axial rearward of the cold-headed socket.
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Cummins, Arthur, SME Mining Engineering Handbook vol. 1, Illustration (FIG. 11-3) p. 11-4 (1973).
Internet Advertisement Printout Wirtgen Products (1 page), no date.
“Appendix C” Overhead Slide made for technical lecture to Virginia Tech Students, used each Fall from 1992-2003.
Kennametal Inc.
Kreck John
Smith Matthew W.
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