Electric heating – Heating devices – Combined with diverse-type art device
Patent
1993-09-28
1995-04-18
Walberg, Teresa J.
Electric heating
Heating devices
Combined with diverse-type art device
219213, H05B 328
Patent
active
054080690
ABSTRACT:
A device for heating a mirror so as to prevent the formation of fog thereon. There is a generally planar electric heating element for the back surface of the mirror, and an electrostatic shield which is mountable between the heating element and the reflective coating on the mirror, so as to prevent the development of an electrostatic charge between the element and coating. The electrostatic shield may be provided by a layer of high resistance conductive ink printed on a sheet of insulation; the conductive material is connected to ground potential as provided by the neutral lead of a household AC power supply. The heating element may also be provided by high resistance conductive ink printed on a sheet of insulation, with low resistance ink being printed over this to provide a power distribution/return network.
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Hathaway Todd N.
Walberg Teresa J.
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