Chisel
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United States of America Patent
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Jul 10, 2012
Grant Date -
Feb 6, 2003
app pub date -
Jul 8, 2002
filing date -
Jul 6, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A tool bit for a chisel or a hammer drill, in particular, a insertable chisel or insertable drill for power-driven drill and chisel hammers, has an insertion end, with a chisel shank or drill shank, and a chisel head or drill shank located opposite the insertion end. The diameter of the shank increases in the direction of the chisel head at least once from a first, small diameter to a second, large diameter and decreases again from this to a small diameter or forms at least one bead.
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