Electric heating – Metal heating – By arc
Reexamination Certificate
2007-01-23
2007-01-23
Paschall, Mark (Department: 3742)
Electric heating
Metal heating
By arc
C219S121430, C156S345480, C118S7230AN, C315S111510
Reexamination Certificate
active
10837912
ABSTRACT:
Apparatus for dissociating gases includes a plasma chamber comprising a gas. A first transformer having a first magnetic core surrounds a first portion of the plasma chamber and has a first primary winding. A second transformer having a second magnetic core surrounds a second portion of the plasma chamber and has a second primary winding. A first solid state AC switching power supply including one or more switching semiconductor devices is coupled to a first voltage supply and has a first output that is coupled to the first primary winding. A second solid state AC switching power supply including one or more switching semiconductor devices is coupled to a second voltage supply and has a second output that is coupled to the second primary winding. The first solid state AC switching power supply drives a first AC current in the first primary winding. The second solid state AC switching power supply drives a second AC current in the second primary winding. The first AC current and the second AC current induce a combined AC potential inside the plasma chamber that directly forms a toroidal plasma that completes a secondary circuit of the transformer and that dissociates the gas.
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Bortkiewicz Andrzej
Bystyak Ilya M.
Chen Xing
Cowe Andrew Barnett
Georgelis Eric
MKS Instruments Inc.
Paschall Mark
Proskauer Rose LLP
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