Switching device for mode transition of DC plasma torches

Details Switching device for mode transition of DC plasma torches Switching device for mode transition of DC plasma torches

2006-02-21

2006-02-21

Paschall, Mark (Department: 3742)

Electric heating

Metal heating

By arc

C219S121520, C219S121480, C219S121570

Reexamination Certificate

active

07002097

ABSTRACT:
The present invention obtains an automatic mode switching of DC plasma torches through, which easily switches DC plasma torches to be run between a transmitting mode and a non-transmitting mode and put the switching device under the monitor and the control of a current sensor and a current level controller; the heat generated by the current passing through can be transferred by a non-combustible liquid driven by a pump and be cooled down through a heat exchanger; and, electric arcs is prevented from happening between two electrodes by the non-combustible liquid.

REFERENCES:
patent: 4250365 (1981-02-01), McConnell
patent: 5208441 (1993-05-01), Broberg
patent: 6444944 (2002-09-01), Schneider et al.
patent: 2004/0045942 (2004-03-01), Norris et al.

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