Method and apparatus for cutting, abrading, and drilling with sublimable particles and vaporous liquids
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United States of America Patent
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Mar 31, 1998
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N/A
app pub date -
Aug 11, 1995
filing date -
Jan 7, 1994
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Abstract
A gas delivery system provides a first gas which is in a liquid state under extreme pressure and in a gaseous state under intermediate pressure. A particle delivery system provides a slurry comprising the first gas in a liquid state and a second gas in a solid state. The second gas is selected so that it will solidify at a temperature at or above the temperature of the first gas in a liquid state. A nozzle assembly connected to the gas delivery system and to the particle delivery system produces a stream having a high velocity central jet comprising the slurry, a liquid sheath surrounding the central jet comprising the first gas in a liquid state and an outer jacket surrounding the liquid sheath comprising the first gas in a gas state.
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