Electric heating – Metal heating – By arc
Patent
1991-11-27
1992-11-17
Paschall, Mark H.
Electric heating
Metal heating
By arc
21912152, 21912401, 21912148, 2191215, B23K 900
Patent
active
051645696
ABSTRACT:
A plasma-operated cutting torch, has a diffusion chamber and a pressure chamber. A central shaft slidably supports an electrode in the diffusion chamber for contact with the nozzle. The central shaft has an annular collar slidable in the pressure chamber. Pressurized gas to be ionized flows into the pressure chamber and diffusion chamber which are always in open communication to the nozzle. The gas pressure against the collar forces the central shaft to move causing separation of the electrode away from the nozzle.
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Italian Patent Application, Silvano Dallavalle et al., "Welding or Cutting Torch for Plasma with Nontransferred Arc", deposited Feb. 27 1986.
Porra Diego
Zigliotto Giuseppe
Paschall Mark H.
Trafimet SAS
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