Welding torch and shield

Details Welding torch and shield Welding torch and shield

2007-05-22

2007-05-22

Tran, Len (Department: 1725)

Electric heating

Metal heating

Nonatmospheric environment at hot spot

C219S136000, C219S072000

Reexamination Certificate

active

11036363

ABSTRACT:
A welding torch (10) for welding on a component has an electrode (12) within a nozzle (14) through which a flow of gas passes. A shield (20) defines an enclosure (22) around the nozzle (14). Means are provided for supplying weld filler material (18) into the vicinity of the electrode (12) through the shield (20). One end of the shield (20) is attached to the welding torch (10). The other end of the shield (20) is open and extends towards the component (16). An inflatable seal (28) is mounted on the end of the shield (20) to seal between the shield (20) and the component (16).

REFERENCES:
patent: 1749765 (1930-03-01), Hendrickson
patent: 4035602 (1977-07-01), Berghof
patent: 4039798 (1977-08-01), Lythall et al.
patent: 4651500 (1987-03-01), Chaffey
patent: 5352860 (1994-10-01), Richardson
patent: 5361972 (1994-11-01), Barker
patent: 5484973 (1996-01-01), Gittens et al.
patent: 5674417 (1997-10-01), Schaugaard et al.
patent: 5950904 (1999-09-01), Camy et al.
patent: 6506995 (2003-01-01), Fusaro, Jr. et al.
patent: 2 308 562 (1997-07-01), None
patent: 2 394 685 (2004-05-01), None

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