Electric heating – Heating devices – With heating unit structure
Patent
1988-07-11
1990-03-20
Griffin, Donald A.
Electric heating
Heating devices
With heating unit structure
H05B 334
Patent
active
049103881
ABSTRACT:
In an electric heating unit (1), at least one heating circuit of a heating resistor (2) is arranged as a coated or printed conductor track and is consequently arranged by means of an adhesive joint (16) on a support (3) made from a high temperature-resistant synthetic paper. The unit is fixed, on its bare side remote from the heating resistor and by means of a whole-surface adhesive joint (13), directly to the associated reception side (11) of the body (10) to be heated. The adhesive joint (13) is appropriately formed by an adhesive layer (14) of silicone resin adhesive or the like, or a self-adhesive layer with a thickness of a few tenths of a millimeter and which permanently in stress-compensating manner has roughly the same thermal stability as the support (3). At least one heating circuit can be switched by means of a mechanical temperature switch with high switching hysteresis.
REFERENCES:
patent: 2391382 (1945-12-01), Bilan
patent: 3475588 (1969-10-01), McMaster
patent: 3757087 (1973-09-01), Bernard
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patent: 3982092 (1976-09-01), Marriott
patent: 4251712 (1981-02-01), Parr
patent: 4450346 (1984-05-01), Boaz
patent: 4488033 (1984-12-01), Trachtenberg
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Keller Ewald
Kicherer Robert
Lorenz Josef
E.G.O. Elektro-Gerate Blanc u. Fischer
Griffin Donald A.
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