Convertible plasma arc torch and method of use

Details Convertible plasma arc torch and method of use Convertible plasma arc torch and method of use

1993-12-01

1994-11-08

Paschall, Mark H.

Electric heating

Metal heating

By arc

21912152, 21912149, 21912148, B23K 900, B23K 1000

Patent

active

053629396

ABSTRACT:
A plasma arc torch is provided which is convertible in the field as to be able to operate in either a transfer arc mode or non-transfer arc mode. The plasma arc torch comprises a torch body having channels formed for flow of coolant and plasma gas therein. The torch body further comprises an anode and a cathode base and terminates at a threaded connection point. Adapted to be assembled to the threaded connection by means of mating threads is, alternatively, either an end cap or a cathode extension assembly, thereby establishing a plasma arc torch capable of operating in either a transfer arc mode or a non-transfer arc mode. When the end cap is connected, the cathode base is not energized. The cathode extension assembly contains a cathode extension which connects to the cathode base on assembly. Both the cathode base and cathode extension are energized to form the active cathode for the non-transfer arc mode operation.

REFERENCES:
patent: 3818174 (1974-06-01), Camacho
patent: 4559439 (1985-12-01), Camacho et al.
patent: 4814577 (1989-03-01), Dallavalle et al.

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