Plasma arc torch

Details Plasma arc torch Plasma arc torch

1998-08-14

1999-08-17

Paschall, Mark

Electric heating

Metal heating

By arc

219 75, 21912148, 21912152, B23K 1000

Patent

active

059389494

ABSTRACT:
A plasma arc torch comprises relatively displaceable electrode and nozzle components having first and second positions relative to one another in which the electrode respectively contacts the nozzle and is spaced an operating distance therefrom. Arrangements are disclosed for relatively displacing the electrode and nozzle between the first and second positions thereof with a pre-determined force of engagement therebetween in the first position, and without having to interrupt the flow of arc gas and/or the flow of arc current during such relative displacement. A torch start up safety test procedure is performed by sequentially displacing the electrode and nozzle between the two positions thereof, sensing for appropriate open and closed circuit conditions therebetween, and enabling the creation of a pilot arc only when a pre-determined sequence of circuit conditions is sensed. Sequential displacement of the electrode and nozzle together with the application of a pre-determined force of engagement therebetween promotes cleaning of oxides from the area of contact between the electrode and nozzle.

REFERENCES:
patent: 3004189 (1961-10-01), Giannini
patent: 3242305 (1966-03-01), Kane et al.
patent: 4567346 (1986-01-01), Marhic
patent: 4788408 (1988-11-01), Wlodarczyk et al.
patent: 4791268 (1988-12-01), Sanders et al.
patent: 4814577 (1989-03-01), Dallavalle et al.
patent: 4896016 (1990-01-01), Broberg et al.
patent: 4902871 (1990-02-01), Sanders et al.
patent: 5164569 (1992-11-01), Porra et al.
patent: 5208441 (1993-05-01), Broberg

Affiliated with

Also associated with

Rating

Plasma arc torch does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Plasma arc torch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plasma arc torch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-312308