PROXIMITY ANTENNA STRUCTURE FOR A LAVATORY OR PLUMBING FIXTURE
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Abstract
A SENSING DEVICE, OFTEN CALLED AN "ANTENNA," EMPLOYED WITH A CAPACITANCE-OPERATED PROXIMITY CONTROL CIRCUIT TO DETECT AND RESPOND TO THE PRESENCE OR ABSENCE OF A USER IN FRONT OF A LAVATORY OR ANY OTHER PLUMBING FIXTURE. THE ANTENNA DEVELOPS AN INCREASE IN CAPACITANCE UPON THE ARRIVAL OF THE USER AT THE FRONT OF THE LAVATORY. THE INCREASE OF CAPACITANCE ACTIVATES AN ELECTRONIC CONTROL CIRCUIT WHICH TURNS ON THE FAUCET OF THE LAVATORY AND KEEPS IT TURNED ON WHILE THE USER SWAYS HIS BODY IN WASHING HIS HANDS. WHEN THE USER DEPARTS FROM THE LAVATORY, THE
FAUCET WILL BE TURNED OFF UPON THE RESULTING DECREASE IN THE CAPACITANCE.
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