Electric heating – Heating devices – With heating unit structure
Patent
1993-06-29
1996-05-14
Walberg, Teresa J.
Electric heating
Heating devices
With heating unit structure
219543, H05B 310, H05B 314
Patent
active
055170030
ABSTRACT:
The self-controlled heater for a rearview mirror of a vehicle comprises a semiconductor polymer substrate based on lampblack and consisting essentially of 60% low density polyethylene, 8.5% ethylene vinyl acetate copolymer, 20% conductive lampblack having a porous structure; 4.0% of a spreading agent consisting of calcium stearate; 3.0% of an antioxidant; and 0.5% of a coupling agent consisting of calcium titanate, with a high degree of shearing and a low degree of orientation for lampblack aggregations; a silver ink conductor track printed on the substrate, the conductor track including negative and positive poles having interpenetrating adjacent branches spaced at intervals from each other so as to provide a sufficient amount of heat to defog and defrost the rearview mirror; and two terminals applied to the substrate, one of which is connected to the negative pole and the other of which is connected to the positive pole.
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Da Costa Olavo N.
Kadooka Humberto T.
Moreno Ricardo P.
Metagal Industria E Comercio Ltd.
Paik Sam
Striker Michael J.
Walberg Teresa J.
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