Electric heating – Metal heating – By arc
Reexamination Certificate
2005-05-03
2005-05-03
Paschall, Mark (Department: 3742)
Electric heating
Metal heating
By arc
C219S121450, C219S121480, C219S121360
Reexamination Certificate
active
06888091
ABSTRACT:
A device for allowing a rotating plasma arc to perform cutting or welding operations inside tubes with small inside diameters by being attached to existing plasma arc power sources where in the speed and axis of rotation of the arc are controlled by the device, and the components of the device in proximity to the plasma arc itself are protected by the ceramic composition of the device and an inert gas shield.
REFERENCES:
patent: 5266775 (1993-11-01), Brolund et al.
patent: 6201207 (2001-03-01), Maruyama et al.
Krause Joseph Donald
Morgan Jessie
Morgan Krause
Paschall Mark
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