Plasma arc torch electrode

Details Plasma arc torch electrode Plasma arc torch electrode

2006-11-07

2006-11-07

Paschall, Mark (Department: 3742)

Electric heating

Metal heating

By arc

C219S121510, C219S121490, C219S119000

Reexamination Certificate

active

07132619

ABSTRACT:
A variety of electrodes for use in a plasma arc torch are provided that improve cooling between the electrode and an adjacent cathodic element such as a cathode. At least one passageway is formed between the electrode and the cathode for the flow of a fluid, e.g. cooling fluid, wherein the flow of the fluid is proximate, or through an adjacent vicinity of, electrical contact between the cathode and the electrode. The passageway is formed through the electrode, through the cathode, between the electrode and the cathode, and through a third element in the various forms of the present invention. Further, methods of operating a plasma arc torch using the electrodes according to the various forms of the invention are also provided.

REFERENCES:
patent: 4140892 (1979-02-01), Muller
patent: 4954683 (1990-09-01), Hatch
patent: 5965040 (1999-10-01), Luo et al.
patent: 6362450 (2002-03-01), Severance, Jr.
patent: 6403915 (2002-06-01), Cook et al.
patent: 2003/0034333 (2003-02-01), Horner-Richardson et al.

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