Pulsed electric rock drilling apparatus with non-rotating bit
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United States of America Patent
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May 8, 2012
Grant Date -
Feb 26, 2009
app pub date -
Aug 26, 2008
filing date -
Aug 20, 2004
priority date (Note) -
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Abstract
The present invention provides for pulsed powered drilling apparatuses and methods. A drilling apparatus is provided comprising a bit having one or more sets of electrodes through which a pulsed voltage is passed through a mineral substrate to create a crushing or drilling action. The electrocrushing drilling process may have, but does not require, rotation of the bit. The electrocrushing drilling process is capable of excavating the hole out beyond the edges of the bit with or without the need of mechanical teeth.
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