Ground opening device
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United States of America Patent
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N/A
Issued Date -
Nov 29, 2007
app pub date -
May 23, 2006
filing date -
May 23, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A ground opening device includes a ground-penetrating element configured to penetrate a ground surface, a down drive element configured to apply a downward force to the ground-penetrating element, a reaction force sensor configured to sense a ground reaction force in response to the action of the ground-penetrating element, and a controller configured to adjust the downward force on the ground-penetrating element in response to the sensed ground reaction force.
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