Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1997-06-11
1999-07-06
Walberg, Teresa
Electric heating
Heating devices
With heater-unit housing, casing, or support means
219544, 219549, 392497, 392501, 392503, H05B 306, H05B 378, H05B 340
Patent
active
059193867
ABSTRACT:
A purge manifold assembly, which can be used in a gas purged immersion heater, includes a housing having a vessel wall having an aperture extending therethrough. A purge manifold is located adjacent the vessel wall. The purge manifold includes an aperture extending therethrough and colinear with the vessel wall aperture, a bore extending in the purge manifold, in a direction approximately normal to the purge manifold aperture, and a port communicating the bore with the purge manifold aperture. A fitting body extends into the vessel wall aperture and the purge manifold aperture. The fitting body includes a longitudinally extending through bore and a port communicating with the through bore. The port also communicates with the port of the purge manifold. In this way, a purge gas is allowed to flow through a sheath enclosing a heater wire held in the housing of the gas purged immersion heater.
REFERENCES:
patent: 4158764 (1979-06-01), Yane
patent: 4553024 (1985-11-01), Findlay
patent: 4835365 (1989-05-01), Etheridge
patent: 5021151 (1991-06-01), Yane
patent: 5224503 (1993-07-01), Thompson et al.
Campbell Thor S.
Lufran Incorporated
Walberg Teresa
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