Concave drag bit cutter device and method
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United States of America Patent
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-
Jan 7, 1992
Grant Date -
N/A
app pub date -
Jul 16, 1990
filing date -
Jul 16, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A concave drag bit cutter device and cutting method using such a concave cutter bit are provided which provide substantially increased efficiencies over conventional point attack bits. A number of different cutter bit shapes employing a concave cutting face can be used. The cutter bits are intended to replace the conventional point attack cutter bits and can be used in continuous mining machines, saw blades, auger drills, longwall shearers and the like, in cutting and mining operations.
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