Chuck sleeve insert for a drill
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United States of America Patent
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-
Jan 6, 1998
Grant Date -
N/A
app pub date -
Sep 4, 1996
filing date -
Sep 4, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A double-ended drill bit having opposed cutting ends of different structural configurations is provided in combination with a sleeve or holder to be received within a drill chuck. The sleeve is provided with a cylindrical body having a top end with a pair of helically-shaped longitudinally extending members in spaced mating relation attached thereto. One cutting end of a drill bit is received within the cylindrical body and the spaced helically-shaped members.
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