Cartridge heater with improved thermocouple

Details Cartridge heater with improved thermocouple Cartridge heater with improved thermocouple

1976-03-18

1977-03-01

Mayewsky, Volodymyr Y.

Electric heating

Heating devices

With heater-unit housing, casing, or support means

219328, 219510, 219544, 219552, 425144, H05B 380

Patent

active

040103510

ABSTRACT:
A cartridge heater with improved thermocouple comprising a tubular metal sheath with a front end, a metal plug closing the front end, a filler of dielectric material in the sheath rearward of the plug and an elongate resistance wire supported by the filler, said plug having a pair of spaced axially extending through holes, elongate insulating tubes with front and rear ends and engaged in said holes with their front ends spaced predetermined limited distances from the open front ends of the holes, a pair of elongate thermocouple wires with front end portions engaged through the sleeves and projecting forwardly therefrom and rear portions supported in said filler and projecting rearwardly through and from the sheath and metal deposits in the forward position of the holes in the plug in sealing engagement therewith and in heat conducting contact with the thermocouple wires.

REFERENCES:
patent: 3754118 (1973-08-01), Booker
patent: 3890485 (1975-06-01), Kozbelt
patent: 3911251 (1975-10-01), Day
patent: 3920963 (1975-11-01), Beasley
patent: 3970821 (1976-07-01), Crandell

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