Electric heating – Metal heating – By arc
Reexamination Certificate
2005-11-29
2005-11-29
Hoang, Tu (Department: 3742)
Electric heating
Metal heating
By arc
C219S121520
Reexamination Certificate
active
06969819
ABSTRACT:
A plasma torch is provided having a tubular member defining a bore extending axially between first and second ends, and nozzle engaged with the first end. A movable member is engaged in the tubular member bore, and includes a first end disposed toward the nozzle and a second end, with a piston member engaged therewith away from the first end. An electrode has a first portion defining a bore and is received by the movable member first end. The electrode has a second portion extending outwardly from the movable member first end toward the nozzle, and a radially outward-extending medial flange between the first and second portions axially outward of the movable member first end. The electrode is movable between an inoperable position in contact with the nozzle and an operable position separated from the nozzle and the medial flange in contact with the tubular member first end.
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Alston & Bird LLP
Hoang Tu
The ESAB Group, Inc.
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