Electric heating – Heating devices – Combined with diverse-type art device
Patent
1981-12-17
1983-10-18
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
Combined with diverse-type art device
219203, 219505, 219522, 219541, 338 22R, 350582, H05B 100
Patent
active
044107900
ABSTRACT:
An economical mirror unit adapted for exterior mounting on an automobile has a single self-regulating electrical resistance heater disc of a material of positive temperature coefficient of resistivity mounted in a recess on a heat-distributing metal plate and enclosed in the recess by a glass reflecting member mounted over the recess so that the heater serves to defog the reflecting surface of the member. Various portions of the plate have selected different spacings from the glass reflecting member for heating various overlying portions of the reflecting member to a substantially uniform temperature so that the heater is operable at a high temperature to rapidly and uniformly defog the mirror without risk of damage to the glass reflecting member.
REFERENCES:
patent: 2564836 (1951-08-01), Elsenheimer
patent: 2565256 (1951-08-01), Myers et al.
patent: 3052787 (1962-09-01), Williams
patent: 3940822 (1976-03-01), Emerick et al.
patent: 3976854 (1976-08-01), Ishikawa et al.
patent: 3996447 (1976-12-01), Bouffard et al.
patent: 4237366 (1980-12-01), Berg
patent: 4283117 (1981-08-01), Ellis
Berg Peter G.
Strobel Stephen J.
Haug John A.
Mayewsky Volodymyr Y.
McAndrews James P.
Sharp Melvin
Texas Instruments Incorporated
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