Plasma gun apparatus and method with precision adjustment of arc

Details Plasma gun apparatus and method with precision adjustment of arc Plasma gun apparatus and method with precision adjustment of arc

1989-10-18

1990-05-08

Paschall, M. H.

Electric heating

Metal heating

By arc

21912152, 21912157, 219 75, B23K 900

Patent

active

049240595

ABSTRACT:
A plasma gun apparatus with precision adjustment of arc voltage, includes a gun body with a bore therethrough, a nozzle anode in the bore, a cathode holder engaged in the bore with threads, and a cathode mounted on the cathode holder. A locking ring is engaged in the bore with threads for locking the cathode holder. An inner wrench is formed of a handle attached to a shaft inserted through a hole in the locking ring and engaged with the cathode holder to rotate the same for axial positioning. A sleeve wrench is disposed coaxially over the shaft and engaged with the locking ring. The handle and the sleeve wrench each has a plurality of angular position markings thereon mutually alignable to provide rotational reference for precision positioning of the cathode holder.

REFERENCES:
patent: 2960594 (1958-06-01), Thoppe
patent: 3145287 (1961-07-01), Siebein
patent: 3627965 (1966-01-01), Zweig
patent: 4430546 (1984-02-01), Irons

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