Tank heater alarm

Details Tank heater alarm Tank heater alarm

1977-07-18

1979-01-16

Truhe, J. V.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

1225042, 137558, 200220, 219506, 340606, 340689, F24H 120, H05B 102

Patent

active

041350790

ABSTRACT:
A housing containing a buzzer and mercury switch is mounted on the shaft of the drain lever for a heated tank, for example in a dishwasher. If the heating unit is still turned on when the drain valve is opened, the buzzer sounds to warn the operator that operation of the heating unit without water in the tank will damage the machine.

REFERENCES:
patent: 1510912 (1924-10-01), Allen
patent: 2553968 (1951-05-01), Hallerberg
patent: 2650274 (1953-08-01), McCammant
patent: 3619558 (1971-11-01), Block

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