Rotational drill bits and drilling apparatuses including the same
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United States of America Patent
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Aug 18, 2015
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N/A
app pub date -
Nov 15, 2012
filing date -
Jun 4, 2010
priority date (Note) -
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Abstract
A roof-bolt drill bit. The roof-bolt drill bit may include a bit body rotatable about a central axis and a cutting element coupled to the bit body. The bit body may comprise a forward end, a rearward end axially spaced away from the forward end, and an internal passage defined within the bit body, with the internal passage extending from a rearward opening defined in the rearward end of the bit body through at least a portion of the bit body. A fluid port is configured to direct fluid from the internal passage through a port opening in a direction that forms an angle with respect to a forward direction of the central axis.
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