Plasma arc torch trigger system

Details Plasma arc torch trigger system Plasma arc torch trigger system

2006-04-04

2006-04-04

Paschall, Mark (Department: 3742)

Electric heating

Metal heating

By arc

C219S121500, C219S121520, C219S075000

Reexamination Certificate

active

07022936

ABSTRACT:
A trigger system for operating a plasma arc torch is provided that comprises a selector that operates between at least a first operating position and a second operating position, wherein the first operating position operates the plasma arc torch in a first mode to deliver gas to the plasma arc torch, and the second operating position operates the plasma arc torch in a second mode to deliver the gas and electric power to the plasma arc torch. Further, the selector comprises a neutral position that selects a neutral mode in which delivery of gas and electric power to the plasma arc torch is inhibited. The selector is preferably disposed within a housing of the plasma arc torch and is slidably operable between the first operating position, the second operating position, and the neutral position.

REFERENCES:
patent: 3581051 (1971-05-01), Brown
patent: 3662147 (1972-05-01), Ogden et al.
patent: 5039837 (1991-08-01), Nourbakhsh et al.
patent: 5357076 (1994-10-01), Blankenship
patent: 5597497 (1997-01-01), Dean et al.
patent: 5698122 (1997-12-01), Lubieniecki et al.

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