Self regulating heating device employing positive temperature co

Details Self regulating heating device employing positive temperature co Self regulating heating device employing positive temperature co

1985-08-29

1987-04-14

Griffin, Donald A.

Electric heating

Heating devices

With heating unit structure

252511, H05B 310, H01B 106

Patent

active

046581219

ABSTRACT:
Disclosed is a positive temperature coefficient of resistance (PTC) crosslinked polymeric composition comprising a first polymeric material exhibiting high green strength prior to crosslinking and elastomeric behavior subsequent to cross-linking, and a second polymeric material comprising a thermoplastic, both said materials having dispersed therein conductive particles, e.g., carbon black, and further, said composition exhibiting a rise in resistance with increased temperature at temperatures above the melting point of either material.

REFERENCES:
patent: 3760495 (1973-09-01), Meyer
patent: 3900654 (1975-08-01), Stinger
patent: 3973100 (1976-08-01), Flanagan
patent: 4560498 (1985-12-01), Horsma et al.

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