HYBRID BIT WITH BLADES AND DISCS
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United States of America Patent
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Issued Date -
Mar 2, 2017
app pub date -
May 22, 2014
filing date -
May 22, 2014
priority date (Note) -
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Abstract
A hybrid drill bit includes a bit body having a central bit body axis at a center of the bit body, a blade on the bit body extending from an end of the bit body, and a roller disc rotatably coupled to the bit body about the end of the bit body to rotate on a roller disc axis. The roller disc axis extends toward the central bit body axis, and the blade includes a plurality of fixed cutting elements.
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