Electric heating – Metal heating – By arc
Reexamination Certificate
2008-03-11
2008-03-11
Paschall, Mark (Department: 3742)
Electric heating
Metal heating
By arc
C219S121590, C219S121520, C219S075000
Reexamination Certificate
active
11240050
ABSTRACT:
To protect the collimator of a transferred plasma arc torch from premature failure due to corrosion, an anti-corrosive covering is applied on the exposed face surface and a portion of the inner exit bore of the collimator. The specification describes several methods for producing the collimator for a plasma torch having an anti-corrosive coating or cladding on the exposed surfaces thereof, including electroplating, electroless plating, flame spraying, plasma spraying, plasma transferred arc, hot isostatic pressing and explosive cladding.
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Hanus Gary J.
Reeve Rodney E.
Stahl Todd J.
Nikolai Thomas J.
Nikolai & Mersereau , P.A.
Paschall Mark
Phoenix Solutions Co.
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