Drain valve assembly

Details Drain valve assembly Drain valve assembly

1992-12-23

1994-11-15

Phillips, Charles E.

Baths, closets, sinks, and spittoons

Drain, overflow or trap for a sink or bath

Drain valve

251 65, 25112915, E03C 123

Patent

active

053635191

ABSTRACT:
Disclosed herein is a drain valve for a bathtub or other gravity drained container. When energized with an electrical pulse, a solenoid mounted directly below the drain elbow drives the poppet upward, which unseals the outlet drain. A permanent magnet latches the solenoid armature in place in the up position. The valve is closed by energizing the solenoid with a pulse of opposite polarity which pulls the armature downward and out of the influence of the permanent magnet. A piston in a sleeve over-nested by a movable shroud provides leakage protection and allows manual opening and closing.

REFERENCES:
patent: 1501303 (1924-07-01), Berry
patent: 2180790 (1939-11-01), Brummett
patent: 2989758 (1961-06-01), Turek et al.
patent: 3099019 (1963-07-01), Tiller
patent: 3368788 (1968-02-01), Padula
patent: 3652054 (1972-03-01), Layton
patent: 4042984 (1977-08-01), Butler
patent: 4338968 (1982-07-01), Mercier
patent: 4559971 (1985-12-01), Bradshaw
patent: 4564046 (1986-01-01), Lungu
patent: 4794890 (1989-01-01), Richeson
patent: 4890815 (1990-01-01), Hascher-Reichl
patent: 4945579 (1990-08-01), Husting
patent: 5029807 (1991-07-01), Fuchs
patent: 5069422 (1991-12-01), Kawamura

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