Electric resistance heating assembly for plastics material extru

Electric heating – Heating devices – With heating unit structure

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Details

219535, 219536, 219552, 338213, H05B 302

Patent

active

045047340

ABSTRACT:
The assembly comprises coiled resistances passing through one or more holes as transversely formed in ceramics material strips so shaped as to be effective to be coupled to one another in a partial sliding relationship and to provide a structure having void spaces, engageable by the electric resistances and being restrained, on the outside thereof, by a net band wound as a ring and provided with means for removably coupling its end portions.

REFERENCES:
patent: 795803 (1905-07-01), Vedovelli
patent: 819654 (1906-05-01), Heath
patent: 845225 (1907-02-01), Fleming
patent: 2549944 (1951-04-01), Steiner
patent: 2722597 (1955-11-01), Steiner
patent: 3036187 (1962-05-01), Goldstaub et al.
patent: 3393297 (1967-07-01), Hart
patent: 3887790 (1975-06-01), Ferguson
patent: 4255649 (1981-05-01), Fisher
patent: 4410793 (1983-10-01), Fischer et al.

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