Baths – closets – sinks – and spittoons – Strainer – stopper – plug or closure
Patent
1978-09-11
1980-01-29
Artis, Henry K.
Baths, closets, sinks, and spittoons
Strainer, stopper, plug or closure
4287, 251129, 200 84C, 4406, A47K 114, E03C 126, E03C 1242
Patent
active
041853369
ABSTRACT:
A deenergized solenoid operated valve normally closes the drain line of a sink, basin, tub or toilet bowl, the valve thus serving as a stopper. When a pushbutton switch is closed, the solenoid is energized to retract the valve and open the drain, a flow responsive switch maintaining the solenoid energized until all of the water has drained from the sink or bowl. A float responsive switch will also energize the solenoid to retract the valve and open the drain if water accumulates from a leaky faucet. Whenever water is drained, the low pressure or vacuum that results produces an accompanying venting action. The invention may be used with a P or S-type drain connection and/or with a conventional stack vent, but does not require that any of these be employed.
REFERENCES:
patent: 3429552 (1969-02-01), Huley et al.
patent: 3580238 (1971-05-01), Diehl
patent: 3812398 (1974-05-01), Kozel et al.
patent: 3955795 (1976-05-01), Neely
patent: 4008876 (1977-02-01), Bastle
patent: 4064755 (1977-12-01), Bongort et al.
patent: 4085921 (1978-04-01), Ueda et al.
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