Flexible temperature self regulating heating cable

Electric heating – Heating devices – With heating unit structure

Patent

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Details

219505, 219528, 219541, 219548, 338 22R, 338214, 174 52PE, H05B 356

Patent

active

042504007

ABSTRACT:
Electrically parallel but positionally serial, helically wound segments of heating wire in a cable are each controlled by a chip (thermistor) and are connected to the cable proper by wrapping around notches formed in the insulation of the cable proper at first one side and then the other of the cable. The inner and outer-faces of each chip are connected into each segment by direct contact or by leads at spaced points between which the heating wire is severed. An extruded casing is shrunk-fit over the other parts.

REFERENCES:
patent: 2494589 (1950-01-01), Sletner
patent: 3621203 (1971-11-01), Geomini et al.
patent: 3757086 (1973-09-01), Indoe
patent: 3784784 (1974-01-01), Geomini et al.
patent: 3858144 (1974-12-01), Bedard et al.
patent: 4037083 (1977-07-01), Leavines
patent: 4072848 (1978-02-01), Johnson et al.
patent: 4117312 (1978-09-01), Johnson et al.

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