Earth-boring bit having shear-cutting elements
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United States of America Patent
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May 19, 1998
Grant Date -
N/A
app pub date -
Aug 12, 1996
filing date -
Aug 12, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
An earth-boring bit has a bit body. At least one cantilevered bearing shaft depends inwardly and downwardly from the bit body and a cutter is mounted for rotation on the bearing shaft. The cutter includes a plurality of cutting elements, at least one of which has a generally cylindrical element body of hard metal. A pair of flanks extend from the body and converge to define a crest. The crest defines at least one sharp cutting edge at its intersection with one of the flanks.
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