Electric heating – Metal heating – Nonatmospheric environment at hot spot
Patent
1994-07-29
1996-01-02
Shaw, Clifford C.
Electric heating
Metal heating
Nonatmospheric environment at hot spot
B23K 900
Patent
active
054810795
ABSTRACT:
The invention provides an improved compact gas tungsten arc welding (GTAW) torch apparatus allows for welding on such surfaces that otherwise could not be welded with linear or 90.degree. bend welding torch apparatuses, by providing a bend greater than 282.degree.. The inventive torch is compact, not requiring a large radius of curvature or a water outlet pipe passing through the support housing. The inventive torch also uses one of the feed pipes as an electrical conductor.
REFERENCES:
patent: 2571684 (1951-10-01), Craven
patent: 4104499 (1978-08-01), Luttrell et al.
patent: 4629853 (1986-12-01), Yttergren et al.
patent: 5285042 (1994-02-01), Erichsen et al.
Boerman Gary L.
Erichsen Thomas D.
Gordon Ian C. B.
Richard Daniel J.
FMC Corporation
Lee Michael B. K.
Rudy Douglas W.
Shaw Clifford C.
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