Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1983-03-24
1986-03-04
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
With heater-unit housing, casing, or support means
219345, 219549, 338212, H05B 336
Patent
active
045741867
ABSTRACT:
A heating sheet is provided in which protective covers are laminated to both surfaces of a heating element in which plastic sheets are respectively formed on the two surfaces of a metal foil heating circuit. The protective covers are adhered to the heater element such that indentations or recesses may be formed in those portions of the protective covers which do not correspond to the heating circuit.
REFERENCES:
patent: 3213521 (1965-10-01), Owers
patent: 3215574 (1965-11-01), Korb
patent: 3423574 (1969-01-01), Shomphe et al.
patent: 3539767 (1970-11-01), Eisler
patent: 3584198 (1971-06-01), Doi et al.
patent: 3749886 (1973-07-01), Michaelsen
patent: 4220848 (1980-09-01), McMullan et al.
patent: 4293763 (1981-10-01), McMullan
Sakai Yoshio
Yamada Takeshi
Mayewsky Volodymyr Y.
Totoku Electric Co., Ltd.
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