Heating assembly with vibration dampening shipping supports for

Electricity: conductors and insulators – Feedthrough or bushing – Compression

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13 20, 13 22, 174 42, 206443, 206589, 188 1B, 219536, 219546, 338234, H05B 362, F27D 1102

Patent

active

042152330

ABSTRACT:
Electrical resistance heating elements made of graphite and disposed in a ceramic tube are protected against breakage during shipment by cardboard inserts which are telescoped over the heating elements and into the tube. When the heating elements are first energized, the inserts burn away into harmless ash which falls to the bottom of the tube.

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patent: 3712465 (1973-01-01), Deuschle
patent: 4130185 (1978-12-01), Densmore
patent: 4131198 (1978-12-01), Fischer
patent: 4135053 (1979-01-01), Kastilahn et al.

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