Baths – closets – sinks – and spittoons – Wash receptacles – With proximity operated valve
Patent
1983-09-23
1985-06-04
Phillips, Charles E.
Baths, closets, sinks, and spittoons
Wash receptacles
With proximity operated valve
251129, 367 93, E03C 105
Patent
active
045205167
ABSTRACT:
A control circuit (16) mounted on a faucet (10) operates an ultrasonic transducer (20) that transmits ultrasound into a target region (22) below the outlet (24) of the faucet. The control circuit receives electrical signals from the transducer when the transducer receives echoes from objects within the target region. The control circuit times the echoes to determine the distance of the object causing the echoes, and, if the distance of the object changes between successive measurements, the control circuit operates a valve (12) to permit water to flow. The circuit is powered by a rechargeable battery (18) that is charged by the action of a generator (31) that is driven by a turbine (34) powered by the flow of water through the faucet.
REFERENCES:
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patent: 2507966 (1950-05-01), Filliung
patent: 2603794 (1952-07-01), Bokser
patent: 3151340 (1964-10-01), Teshima
patent: 3314081 (1967-04-01), Atkins et al.
patent: 3406941 (1968-10-01), Ichimori et al.
patent: 3575640 (1971-04-01), Ishikawa
patent: 3638680 (1972-02-01), Kopp
patent: 3670167 (1972-06-01), Forbes
patent: 3724001 (1973-04-01), Ichimori et al.
patent: 4141091 (1979-02-01), Pulvari
patent: 4229811 (1980-10-01), Salem
patent: 4309781 (1982-01-01), Lissau
patent: 4402095 (1983-09-01), Pepper
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