Plasma-arc torch interlock with pressure sensing

Details Plasma-arc torch interlock with pressure sensing Plasma-arc torch interlock with pressure sensing

1985-11-04

1987-05-05

Paschall, M. H.

Electric heating

Metal heating

By arc

219121PT, 21913021, B23K 900, B23K 902

Patent

active

046635122

ABSTRACT:
A plasma-arc torch interlock with pressure sensing is provided. A pressure sensor is included within the conduit supplying working fluid to a plasma-arc torch. By sensing a decrease in pressure of the working fluid which is caused by a necessary part being not in place, a control circuit shuts off power to the torch. In a second embodiment, two conduits are provided to supply fluid to the torch. One conduit supplies the primary working fluid to create the plasma-arc while the other supplies secondary flow for purposes of cooling.

REFERENCES:
patent: 3191088 (1965-06-01), Hawkins et al.
patent: 3558973 (1971-01-01), Pochert et al.
patent: 4035603 (1977-07-01), Fernicola
patent: 4339700 (1982-05-01), Jagieniak et al.
patent: 4580032 (1986-04-01), Carkhuff

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