CUTTING INSERT FOR PERCUSSION DRILL BIT
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United States of America Patent
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Issued Date -
Jul 3, 2014
app pub date -
Dec 23, 2013
filing date -
Dec 28, 2012
priority date (Note) -
Published
status (Latency Note)
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Abstract
A cutting insert for a percussion hammer bit. The cutting insert includes a base portion for coupling to a bit face of the percussion hammer bit. An extension portion is coupled to the base portion and axially offset therefrom along a longitudinal axis extending through the base portion and the extension portion. The extension portion includes at least three lobes that are circumferentially offset from one another around the longitudinal axis. The lobes extend axially away from the base portion, and the lobes extend radially outward from the longitudinal axis.
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