Electric heating – Metal heating – Nonatmospheric environment at hot spot
Patent
1984-05-07
1985-05-14
Envall, Jr., Roy N.
Electric heating
Metal heating
Nonatmospheric environment at hot spot
219136, B23K 928
Patent
active
045174334
ABSTRACT:
A small bore welding torch for tungsten inert gas welding includes a copper rod which functions as an electrical conductor to the tungsten electrode which is anchored in a cross bore adjacent one end of the rod and as a tie to hold two insulative sleeves in assembly. An annular passage surrounds the copper rod and between the rod and outer sleeve provides an inert gas conduit to the welding electrode which projects into a side port in a refractory sleeve.
REFERENCES:
patent: 1534688 (1925-04-01), Collins
patent: 3288980 (1966-11-01), Rohrberg et al.
patent: 3433991 (1969-03-01), Whyman
patent: 3562486 (1971-02-01), Hatch
patent: 3604889 (1971-09-01), Rohrberg
patent: 3649805 (1972-03-01), Rohrberg
patent: 3769489 (1973-10-01), Charlesworth
patent: 4300034 (1981-11-01), Schneider et al.
Advertisement--Metallurgical Industries Inc.
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Ameco Corporation
Envall Jr. Roy N.
Sigda C. M.
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