Panel electrical heating element

Electric heating – Heating devices – With heating unit structure

Patent

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Details

219345, 219548, 252513, H05B 310

Patent

active

040151050

ABSTRACT:
A high proportion of inexpensive materials are utilized to provide a low-cost heating element in panel form having a resistivity of 10.sup.-.sup.3 to 10.sup.3 ohm-centimeters which may be operated in the ambient atmosphere as or in a wall, ceiling or floor of a heating or warming oven or a room of a human residence and which may be contacted by humans without receiving an electric shock or thermal burn.
The composition comprises iron particles or iron filings and inexpensive material such as bottle glass or such waste material as glass from re-cycled bottles.

REFERENCES:
patent: 2855491 (1958-10-01), Navias
patent: 2924540 (1960-02-01), D'Andrea
patent: 2946937 (1960-07-01), Herbert
patent: 2950995 (1960-08-01), Plarc et al.
patent: 3377462 (1968-04-01), Pferschy
patent: 3626149 (1971-12-01), Carney et al.
patent: 3794518 (1974-02-01), Howell
patent: 3924098 (1975-12-01), Dunn

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