Plasma arc torch and method using blow forward contact starting

Details Plasma arc torch and method using blow forward contact starting Plasma arc torch and method using blow forward contact starting

1996-10-08

1999-11-30

Paschall, Mark H.

Electric heating

Metal heating

By arc

2191215, 21912148, 219 75, B23K 1000

Patent

active

059946636

ABSTRACT:
Disclosed is a novel method and structure for contact starting a plasma arc torch. A translatable, electrically conductive component such as a nozzle or swirl ring is biased into contact with an electrode by a compliant spring element. A pilot arc is formed by first passing current through the electrode/component interface. Thereafter, the component is translated under the influence of gas pressure in a plasma chamber formed between the electrode and component, compressing the compliant element and initiating the pilot arc. The spring element may be a separate element or may be maintained integrally with the nozzle, swirl ring, or a retaining cap, facilitating removal and replacement of the spring element with consumable components of the torch.

REFERENCES:
patent: 3004189 (1961-10-01), Giannini
patent: 3242305 (1966-03-01), Kane et al.
patent: 3592994 (1971-07-01), Ford
patent: 3832513 (1974-08-01), Klasson
patent: 4445021 (1984-04-01), Irons et al.
patent: 4521666 (1985-06-01), Severance, Jr. et al.
patent: 4567346 (1986-01-01), Marhic
patent: 4590354 (1986-05-01), Marhic et al.
patent: 4650956 (1987-03-01), Marhic et al.
patent: 4701590 (1987-10-01), Hatch
patent: 4791268 (1988-12-01), Sanders et al.
patent: 4902871 (1990-02-01), Sanders et al.
patent: 4940877 (1990-07-01), Broberg
patent: 4967055 (1990-10-01), Raney et al.
patent: 5083005 (1992-01-01), Degrigny
patent: 5208441 (1993-05-01), Broberg
patent: 5464083 (1995-11-01), Arnold et al.
patent: 5569397 (1996-10-01), Tsurumaki et al.
patent: 5591357 (1997-01-01), Couch, Jr. et al.
Associated Spring, Inc. catalog Form No. 700, dated Dec. 1994; pp. front cover, copyright pp., 14, 16, 18, 20, and rear cover.
Smalley Steel Ring Company catalog No. WS-93A, undated; pp. front cover, catalog No. page, and 21.
Powerhold, Inc. catalog dated Jan. 1992; pp. front cover, contents, 2, rear cover.

Affiliated with

Also associated with

Rating

Plasma arc torch and method using blow forward contact starting 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 and method using blow forward contact starting , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plasma arc torch and method using blow forward contact starting will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1675454