Method for forming self-regulating heat trace cable

Details Method for forming self-regulating heat trace cable Method for forming self-regulating heat trace cable

1980-09-09

1981-12-08

Gilden, Leon

Metal working

Method of mechanical manufacture

Electrical device making

219549, 338 22R, H05B 300

Patent

active

043040446

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: 3330034 (1967-07-01), Price
patent: 3621203 (1971-11-01), Geomini
patent: 3757086 (1973-09-01), Indoe
patent: 3784784 (1974-01-01), Geomini
patent: 3793716 (1974-02-01), Johannsen
patent: 3858144 (1974-12-01), Bedard et al
patent: 4037083 (1977-07-01), Learner
patent: 4072848 (1978-02-01), Johnson et al.
patent: 4117312 (1978-09-01), Johnson et al.
patent: 4120086 (1978-10-01), Crandell

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