Self-healing parallel heating tape

Details Self-healing parallel heating tape Self-healing parallel heating tape

1988-09-02

1990-01-02

Paschall, M. H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219504, 219483, 219535, 219549, 361106, H05B 102

Patent

active

048915009

ABSTRACT:
A parallel circuit heating tape (13) of the kind comprising two electrical power conductors (12,15) with low resistance relatively thin heating elements (16) between them which dissipate heat, the tape (13) comprising a temperature monitoring conductor (18,25) which extends alongside one of the power conductors (12,15), the temperature monitoring conductor (18,25) being separated from the one power conductor (18,25) by a substance (23,28) which insulates the two conductors (12,18; 15,25) from one another when the temperature is below a specified temperature or temperature within a transition temperature range, and provides a current path from one conductor (12,14) to the other (18,25) when the temperature is above the specified temperature or temperature within the transition temperature range.

REFERENCES:
patent: 4251718 (1981-02-01), Cole
patent: 4450496 (1984-05-01), Doljack et al.
patent: 4453159 (1984-06-01), Huff et al.
patent: 4485296 (1984-11-01), Ueda et al.
patent: 4503322 (1985-03-01), Kishimoto et al.
patent: 4577094 (1986-03-01), Mills

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