Heater

Details Heater Heater

1990-02-20

1991-10-22

Walberg, Teresa J.

Electric heating

Heating devices

Combined with diverse-type art device

219522, H05B 306, H05B 100

Patent

active

050597671

ABSTRACT:
Positive temperature coefficienct thermistors are mounted in heat transfer relationship to a support member of a material that is pervious to light. The thermistors are positioned on the support member to provide a large unobstructed area through which light may pass. The self-limiting nature of the thermistors eliminates the need for a separate temperature responsive heater control switch. The heater is useable for heating liquid crystal displays, and allows back lighting of such displays by a light source positioned on the opposite side of the heater from the display.

REFERENCES:
patent: 2557905 (1951-06-01), Burton et al.
patent: 4147927 (1979-04-01), Pirotte
patent: 4724304 (1988-02-01), Teshima et al.
patent: 4954692 (1990-09-01), Shikama et al.

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