Filling materials for heating elements

Details Filling materials for heating elements Filling materials for heating elements

1976-08-13

1978-12-12

Truhe, J. V.

Electric heating

Heating devices

With heating unit structure

219544, 252 62, 338238, 338244, 174102P, H05B 318

Patent

active

041297741

ABSTRACT:
A heating element consisting of a metal pipe, an electric resistance conductor inserted into the metal pipe and a heat resistant insulating material filled between said metal pipe and said electric resistance conductor, characterized in that said heat resistant insulating material is one obtained by coating a first insulating material such as particulate fused magnesia with a second insulating material having a lower melting temperature than that of the first insulating material such as a silicone resin, which has been molten, can maintain an insulation resistance of at least 10.sup.3 M.OMEGA. in an atmosphere at 40.degree. C and a relative humidity of 90%.

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patent: 3716693 (1973-02-01), Bleckmann
patent: 3947373 (1976-03-01), Sobajima
patent: 3970817 (1976-07-01), Boyd

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