Plasma generator

Details Plasma generator Plasma generator

1981-04-06

1984-09-25

Paschall, M. H.

Electric heating

Metal heating

By arc

219121PR, 219121P, 219 1055R, 31323131, 31511121, B23K 900

Patent

active

044737360

ABSTRACT:
A plasma generator comprises a metallic tube of small diameter inside which can circulate a gas such as argon at a small flow rate, which is discharged at the front end of the tube. The tube is coupled with an energizing structure which can comprise a frequency generator supplying electromagnetic microwaves, via a coaxial connection, a coupling structure allowing the transfer of the energy of the generator to the front portion of the metallic tube. In the absence of a gas current in the tube, the front portion radiates the energy transmitted to it in the manner of an antenna. When a gas is discharged at the end of the tube, said energy allows maintaining a plasma in front of the latter.
This plasma generator device is usable in many applications, such as a blowtorch a light source or torch usable in spectrography, a plasma motor or an ion source.

REFERENCES:
patent: Re29304 (1977-07-01), Greenfield et al.
patent: 3171009 (1965-02-01), Scheller et al.
patent: 3588594 (1971-06-01), Yamamoto
patent: 3903891 (1975-09-01), Brayshaw
patent: 3922214 (1975-11-01), Van Cakenberghe
patent: 3980855 (1976-09-01), Boudouris et al.
patent: 4207452 (1980-06-01), Arai
patent: 4230448 (1980-10-01), Ward et al.

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