Electrical heating element and fitting assembly

Details Electrical heating element and fitting assembly Electrical heating element and fitting assembly

1977-01-03

1977-08-23

Albritton, C. L.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

29611, 219318, 219536, F24H 100, H05B 100

Patent

active

040442250

ABSTRACT:
A heating element includes an elongated tubular sheath which confines a resistance wire supported by a thermally conductive electrical insulation material which extends to a position flush with the end surface of the sheath. Each end portion of the heating element is supported by a bulkhead fitting which is formed of sheet metal and includes a tubular wall portion having helical convolutions defining external threads. A radial flange portion projects outwardly from the tubular wall portion and forms an annular tapered hub portion firmly engaging the outer surface of the sheath. The flush end surfaces of the insulation material and the sheath are spaced inwardly from the end surface of the fitting to define a cavity, and a thermosetting sealant material is disposed within this cavity and the space defined between the outer surface of the sheath and the helical convolutions.

REFERENCES:
patent: 2245602 (1941-06-01), Morris
patent: 3354294 (1967-11-01), Kollar et al.
patent: 3899658 (1975-08-01), Yartz

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