Drill bit for earth boring
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United States of America Patent
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May 14, 2013
Grant Date -
Oct 7, 2010
app pub date -
Apr 2, 2010
filing date -
Apr 2, 2009
priority date (Note) -
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Abstract
Embodiments of the present invention include a drill bit comprised of a plurality of blades. A first plurality of the blades has cutting elements positioned substantially within the cone section of the drill bit. A second plurality of blades has cutting elements positioned substantially within the blade flank section and the blade shoulder section. Another embodiment of the first plurality of blades in which the blades end or truncate at a radial distance substantially less than the radial distance of the blade shoulder section from the center of the drill bit.
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