Apparatus and method for controlling an underground boring machine
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United States of America Patent
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May 7, 2002
Grant Date -
Nov 8, 2001
app pub date -
Mar 14, 2001
filing date -
Mar 13, 1996
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An apparatus and method for controlling an underground boring machine during boring or reaming operations. A boring tool is displaced along an underground path while being rotated. In response to variations in underground conditions impacting boring tool progress along the underground path, a control system modifies the rate of boring tool displacement along the underground path while rotating the boring tool at a selected rotation rate to optimize excavation productivity. The controller may also monitor the rate at which liquid is pumped through the borehole and automatically adjust the rate of displacement and/or the liquid flow rate so that sufficient liquid is flowing through the borehole to remove the cuttings and debris generated by the boring tool.
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