Body heat responsive valve control apparatus

Details Body heat responsive valve control apparatus Body heat responsive valve control apparatus

1989-10-10

1990-07-17

Artis, Henry K.

Baths, closets, sinks, and spittoons

Wash receptacles

With proximity operated valve

4304, 4DIG3, 25112904, E03C 105, E03C 100

Patent

active

049412191

ABSTRACT:
A low voltage battery energized passive detection system generates a control signal in response to radiated heat from a human body part to open a solenoid operated valve for a predetermined limited time period. In anticipation of a reduction of available DC power, voltage level sensing circuitry disables the valve in the closed position to prevent the valve from remaining in the open position due to an insufficiency of DC power to effect closure of the valve.

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