Electric resistance heater

Details Electric resistance heater Electric resistance heater

1981-08-14

1983-08-30

Mayewsky, Volodymyr Y.

Electric heating

Heating devices

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

219375, 219536, 219546, 219552, 338296, 338316, H05B 302

Patent

active

044018835

ABSTRACT:
A horizontal porcupine coil of electric resistance heating wire is supported against sagging by two superimposed coil-center ceramic tubes containing a conductor for one end of the coil. If one tube cracks it is improbable that the other would crack in the same place, and this keeps to a minimum the possibility of short-circuiting between the conductor and coil.

REFERENCES:
patent: 638236 (1899-12-01), Gold
patent: 1167749 (1916-01-01), Hadaway, Jr.
patent: 1171059 (1916-02-01), Loguin
patent: 1203810 (1916-11-01), Tatum
patent: 1715018 (1929-05-01), Von Brockdorff
patent: 2769074 (1956-10-01), Dyckerhoff
patent: 2973498 (1961-02-01), Calvert
patent: 3551643 (1970-12-01), Pricenski et al.
patent: 4207457 (1980-06-01), Haglund et al.

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