Drain valve with counterweight

Details Drain valve with counterweight Drain valve with counterweight

1998-11-11

2000-07-18

Ferensic, Denise L.

Fluid handling

Line condition change responsive valves

Direct response valves

137527, 1375276, F16K 1500

Patent

active

060892617

ABSTRACT:
A drain system includes a drainpipe and a valve. The valve includes a first and second body and a counterweight assembly. The first body has a passage formed therethrough and is fluidically coupled to the drainpipe. The second body is pivotally coupled to the first body and is moveable between a first generally sealed position and a second unsealed position relative to the drainpipe. The second body has a top surface adapted to receive waste fluid thereon. The counterweight assembly is coupled to the second body and is positioned to produce a force urging the second body toward the first position. The second body is free to pivot toward the second unsealed position in response to the weight of the waste fluid exceeding the force applied by the counterweight assembly.

REFERENCES:
patent: 187002 (1877-02-01), Ganter
patent: 274149 (1883-03-01), Stewart
patent: 1168085 (1916-01-01), McKelvey
patent: 1328103 (1920-01-01), Ripple
patent: 1771770 (1930-07-01), Bruno
patent: 2033306 (1936-03-01), Schofield
patent: 2297060 (1942-09-01), Henry
patent: 4384672 (1983-05-01), Kutzner et al.
patent: 4494564 (1985-01-01), Lukacz

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