Electric heater construction

Details Electric heater construction Electric heater construction

1978-03-13

1979-04-17

Mayewsky, Volodymyr Y.

Electric heating

Heating devices

With heater-unit housing, casing, or support means

219523, 219510, 219530, 219544, 338240, 425144, H05B 558

Patent

active

041502817

ABSTRACT:
A heater element is formed by disposing a pair of heater wires and a pair of thermocouple wires and a powdered mineral material in a metal sheath which is subjected to repeated drawing and annealing operations and is then cut to a desired length after which at one end, the heater wires are welded together and the thermocouple wires are welded to the sheath and the sheath is welded to form a closed end wall. At the opposite end, the heater and thermocouple wires are connected to suitable connection wires. The sheath is formed into a helical coil structure and installed in a runnerless bushing of a plastic molding machine.

REFERENCES:
patent: 3010155 (1961-11-01), Gilmore
patent: 3225321 (1965-12-01), Walter
patent: 3340382 (1967-09-01), Lennox
patent: 3611559 (1971-10-01), McKay et al.
patent: 3678249 (1972-07-01), Lennox
patent: 3849630 (1974-11-01), Halliday
patent: 3890485 (1975-06-01), Kozbelt
patent: 3920963 (1975-11-01), Beasley et al.
patent: 3965808 (1976-06-01), Chometle
patent: 3970821 (1976-07-01), Crandell
patent: 4010351 (1977-03-01), Williams et al.

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