Fluid handling – Liquid level responsive or maintaining systems – By float controlled valve
Patent
1983-12-28
1985-03-12
Walton, George L.
Fluid handling
Liquid level responsive or maintaining systems
By float controlled valve
137448, 137559, F16K 3118, F16K 3300
Patent
active
045038813
ABSTRACT:
An automatic valve for a sewer or the like includes a body having an upstream inlet and a downstream exit for liquid. A path joins the inlet and exit, and a closure gate is hingedly mounted to the body at a substantially horizontal axis located above the path, so that the gate can swing between a first position in which it blocks the path and a second position in which it unblocks the path. An arm is fixed with respect to the closure gate to swing with it in such a way that the arm is higher when the gate blocks the path than it is when the gate unblocks the path, the arm counterbalancing the closure gate so that the latter normally seeks the second position. A cage surrounds the arm and communicates with the path, and a float member in the cage under the arm means is free of connection to the arm means or any other part of the apparatus, whereby a rise in liquid level causes the float member to urge upwardly against the arm and close the closure gate.
REFERENCES:
patent: 810390 (1906-01-01), Bode
patent: 818859 (1906-04-01), Adams
patent: 1205199 (1916-11-01), Healy
patent: 1541318 (1925-06-01), Belluche
patent: 1861397 (1932-05-01), Khun
patent: 1864443 (1932-06-01), Khun
patent: 2603493 (1952-07-01), Rusconi
patent: 2928410 (1960-03-01), Vecchio
patent: 4324506 (1982-04-01), Steinke
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