Electric blanket

Details Electric blanket Electric blanket

1975-10-16

1977-06-21

Albritton, C. L.

Electric heating

Heating devices

Combined with diverse-type art device

219505, H05B 100

Patent

active

040313522

ABSTRACT:
An electric blanket assembly having a blanket whose heating elements are supplied from a low voltage supply source and a control circuit assembly adapted both to regulate the heating of the blanket and to disconnect the supply source from the heating elements under conditions of malfunction of the assembly. The control circuit includes temperature sensitive elements suitably located in the blanket and associated circuitry arranged to generate a control voltage which is selectable and reference voltage generating means which is also selectable. The control circuit also includes means to compare the control voltage and the reference voltage and to control current flow through the heating elements.

REFERENCES:
patent: 3437792 (1969-04-01), Lauck
patent: 3549865 (1970-12-01), Frank et al.
patent: 3678247 (1972-07-01), Sawa et al.
patent: 3946200 (1976-03-01), Juodikis

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