Progressive Dual-Shaft Drill Head and Systems and Methods Thereof
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United States of America Patent
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N/A
Issued Date -
Jul 25, 2013
app pub date -
Dec 28, 2012
filing date -
Jan 11, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Implementations of the present invention relate to system and apparatus for increasing and lowering speed and torque transferred to a drive shaft from a drive source. In particular, the present disclosure relates to a system that allows engagement and disengagement of low and high gears with a single shifter that can move in a single direction to shift between gears.
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