Underreamer for increasing a bore diameter
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United States of America Patent
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Mar 13, 2018
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N/A
app pub date -
Dec 27, 2013
filing date -
Dec 27, 2012
priority date (Note) -
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Abstract
An underreamer for increasing the diameter of a bore. The underreamer includes a substantially cylindrical body having an axial bore therein. A mandrel may extend axially through the axial bore. One or more cutter blocks are movably coupled to the body. A ratio of a height of the cutter block to a diameter of the body is between about 0.35:1 and about 0.50:1.
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