Free cutting gage insert with relief angle
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United States of America Patent
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Apr 18, 1995
Grant Date -
N/A
app pub date -
Nov 24, 1993
filing date -
Nov 24, 1993
priority date (Note) -
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Abstract
A rolling cone drill bit is disclosed having gage inserts which are installed so as to create a relief angle between the outer surface of each insert and the sidewall of the borehole. Each gage insert only engages the sidewall at a leading edge of the outer surface of the insert.
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