Drill bit with improved insert cutter pattern
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United States of America Patent
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-
Nov 30, 1993
Grant Date -
N/A
app pub date -
Dec 30, 1991
filing date -
Dec 30, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fixed cutting element drill bit is provided with primary cutting elements which are spaced radially from each other across the face of the bit. During drilling, the gap between the cutting elements causes a ridge to be formed in the bottom of the well and the apex of the ridge is removed before reaching the face of the bit. In one form of the invention, the apex is broken off by utilization of the sides of the supports for the primary cutting elements.
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Cited Art Landscape
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