Electric heating – Heating devices – With heating unit structure
Patent
1984-06-21
1986-12-23
Bartis, A.
Electric heating
Heating devices
With heating unit structure
219219, 219505, 219530, 219537, 219544, 338 22R, 338328, H05B 102, H05B 300, B60R 106, H01C 1148
Patent
active
046313915
ABSTRACT:
An electrical heating device for a mirror includes a pair of electrically conductive heating lining plates providing for heat distribution on a mirror, and electrical conductors connected to the plates for connecting the plates to a source of power. An insulating layer is disposed between the plates, the insulating layer having openings, and PTC resistor platelettes disposed in the openings and in electrical contact with the pair of plates. One of the plates has a larger area than the insulating layer such that an outer peripheral edge portion of the one plate is spaced outwardly of the outer peripheral edge of the insulating layer, the other of the pair of plates not being larger in area than the insulating layer. The larger of the plates is adapted to be adhered to the backside of a mirror glass for defogging and demisting the mirror.
REFERENCES:
patent: 3748439 (1973-07-01), Ting et al.
patent: 4237366 (1980-12-01), Berg
patent: 4242567 (1980-12-01), Carter
patent: 4327282 (1982-04-01), Nauerth
patent: 4401885 (1983-08-01), Ishii et al.
patent: 4404463 (1983-09-01), Eder et al.
patent: 4410790 (1983-10-01), Berg et al.
patent: 4426573 (1984-01-01), Fudickar et al.
Bartis A.
Stettner & Co.
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