Coffee maker

Foods and beverages: apparatus – Beverage – Infusors

Patent

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Details

99281, 99285, 99286, 219328, A47J 3142

Patent

active

044124813

ABSTRACT:
An AC power source is coupled with a heater circuit containing a series circuit including a cover switch for a coffee maker, a thermal switch for controlling the temperature of a heating unit and a control switch for turning on and off a heater of the heating unit. A detecting circuit is connected between a signal take-out node as a juction point between the heater and the thermal switch and one end of the AC power source. The detecting circuit responds to a given on-off states of each of the switches to receive a detection current from the signal take-out node, and produces a detection signal for controlling a control apparatus for the coffee maker.

REFERENCES:
patent: 2868109 (1959-01-01), Davis
patent: 4133256 (1979-01-01), Lamour
patent: 4196658 (1980-04-01), Takagi
patent: 4223379 (1980-09-01), Simcoe
patent: 4242568 (1980-12-01), Wunderlin
patent: 4328539 (1982-05-01), Heeger

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