Impact excavation system and method with improved nozzle
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United States of America Patent
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Mar 22, 2011
Grant Date -
Jan 19, 2006
app pub date -
Aug 16, 2005
filing date -
Apr 16, 2003
priority date (Note) -
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Abstract
A system and method for excavating a subterranean formation, according to which a suspension of liquid and a plurality of impactors is introduced into at least one cavity formed in the body member. The suspension is discharged from a nozzle disposed in the cavity towards the formation so that the impactors remove at least a portion of the formation.
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