Abrading – Precision device or process - or with condition responsive... – With indicating
Reexamination Certificate
2005-05-25
2008-10-28
Eley, Timothy V (Department: 3724)
Abrading
Precision device or process - or with condition responsive...
With indicating
C451S053000, C451S102000
Reexamination Certificate
active
07442112
ABSTRACT:
A nozzle for spraying sublimable solid particles and preventing frost from forming at surfaces of the nozzle. The nozzle includes: a cleaning agent block for phase-changing a cleaning agent into a snow containing sublimable solid particles; a nozzle block for growing the cleaning agent snow through adiabatic expansion and spraying the grown cleaning agent snow onto a surface of an object; a carrier gas block for supplying a carrier gas to the nozzle block to mix with the cleaning agent snow; and a heater for heating at least a portion of the carrier gas supplied from the carrier gas supply source. Fine dry ice particles and liquid CO2, passing through a solenoid valve from a CO2reservoir tank and a pressure drop of a flow rate regulation valve, are introduced into the spray nozzle and then mixed with the carrier gas, such as N2 or purified air, and discharged.
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Eley Timothy V
K.C. Tech Co., Ltd.
Leydig , Voit & Mayer, Ltd.
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