Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1998-05-15
1999-01-05
Wu, Daniel J.
Communications: electrical
Condition responsive indicating system
Specific condition
340585, 340686, 340692, 3406935, 62129, 62131, G08B 1308
Patent
active
058567810
ABSTRACT:
A refrigerator door alarm system that includes a message circuit having a playback function that is triggered by a trigger circuit that detects movement of the magnetic gasket of the refrigerator door. The refrigerator door alarm system includes an alarm housing and an alarm circuit including a trigger circuit, a timer circuit responsive to the trigger circuit, a message circuit responsive to the trigger circuit, and a buzzer responsive to the timer circuit. The alarm housing includes an outwardly extended magnetic attachment side strip secured to an attachment strip support, a speaker grate, a buzzer grate, a message record button opening, a message play button opening, a battery compartment, and a magnetically actuated reed switch assembly member; the trigger circuit including a magnetically actuated reed switch that is activatable by the magnetic field oat a magnetic refrigerator door gasket. The refrigerator door alarm system audibly outputs the recorded message on the speaker each time the trigger circuit is triggered. The refrigerator door alarm system generates an audible buzzer output when the timer circuit runs past a predetermined door open time. The door open time is measured from the triggering of the trigger circuit.
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Cheramie Gerrard
Michel Warren K.
Breaux Joseph N.
Wu Daniel J.
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