Diamond impregnated bits and method of using and manufacturing the same
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United States of America Patent
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Mar 15, 2016
Grant Date -
May 31, 2012
app pub date -
Jan 23, 2012
filing date -
May 15, 2008
priority date (Note) -
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Abstract
A drill bit that includes a body having a lower end face for engaging a rock formation, the end face having a plurality of raised ribs extending from the face of the bit body and separated by a plurality of channels therebetween; and at least one of the plurality of ribs having a cutting portion of the at least one rib comprising a first diamond impregnated matrix material and at least a portion of a gage surface region thereof comprising a second diamond impregnated matrix material, the gage surface region backed by a third matrix material is disclosed.
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