Diamond cap cutting elements with flats
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United States of America Patent
Stats
-
Jan 23, 2001
Grant Date -
N/A
app pub date -
Dec 4, 1998
filing date -
Dec 4, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An earth-boring drill bit of the rolling cutter type has cutting elements press fitted into mating holes in the cutter. Each of the cutting elements has a tungsten carbide cylindrical base and a cutting end protruding from the base. A diamond cap is bonded to the cutting end. A plurality of flats are formed in the conical sidewall surrounding the apex. The flats are identical to each other and have oval perimeters. Portions of the perimeters are contiguous with adjacent flats to create sharp edges.
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