Tricone Bit Construction
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United States of America Patent
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Issued Date -
Jan 15, 2015
app pub date -
Jul 11, 2014
filing date -
Jul 12, 2013
priority date (Note) -
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Abstract
A roller cone drill bit having detachable rotatable arms. The arms are connected at a mounting pad to the bit body. Each arm has its own grease delivery system to provide lubrication to the interface between the arms and rolling elements at an end of each arm. The forward-facing contact surface between the bit body and the arms is at an angle, relative to the central axis of the bit, that is ninety degrees or more.
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