Valves and valve actuation – With material guide or restrictor
Patent
1976-09-01
1977-12-27
Schwadron, Martin P.
Valves and valve actuation
With material guide or restrictor
137414, 137437, 251 46, 251 611, F16K 4702
Patent
active
040650952
ABSTRACT:
A valve for controlling the level of water in a toilet flush tank includes a body and cover having interfacing surfaces defining a valve chamber and a diaphragm chamber. A valve seat in the valve chamber communicates with a water inlet by way of a projection integral with the body adapted to extend through the flush tank water inlet opening to mount the housing in a normally submerged position. A diaphragm is held in the diaphragm chamber between the cover and body, and a flexible valve member is held in the valve chamber between the cover and body. An air passage defined in part by the projection vents the diaphragm chamber to atmosphere through the flush tank floor, and liquid pressure is communicated through the cover to the opposite side of the diaphragm. The water inlet passage extends to the center of the valve seat, which is surrounded by a valving surface having a number of segment shaped outlet ports communicating with water outlet passages in the valve body. Movement of the diaphragm in response to changes in water level results in opening and closing of the valve member to maintain the desired water level.
REFERENCES:
patent: 2827073 (1958-03-01), Owens
patent: 2877791 (1959-03-01), Rich
patent: 2986155 (1961-05-01), Doyle
patent: 3242940 (1966-03-01), Sirotek
patent: 3495803 (1970-02-01), Schoepe et al.
patent: 3559675 (1971-02-01), Schoepe
patent: 3693649 (1972-09-01), Gordon et al.
Schwadron Martin P.
Walton G. L.
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