Valve with delayed action closing means

Details Valve with delayed action closing means Valve with delayed action closing means

1973-09-18

1977-11-15

Cohan, Alan

Valves and valve actuation

Fluid actuated or retarded

Compulsory cut-off after flow period

137486, 13762411, 222 20, 251 45, F16K 31385

Patent

active

040582868

ABSTRACT:
A valve having a delayed action closing means comprises a membrane positioned above the valve seat and partitioning the interior of the valve casing into a first and second chamber, a water wheel in the first chamber positioned to be rotated by the incoming water, a shaft from the water wheel acting on a train of gears in the second chamber, an auxiliary valve actuated by the train of gears after the passage of a predetermined quantity of water, a by-pass provided from the upstream part of the valve and leading into the second chamber, and a connection from the auxiliary valve leading into the downstream part of the valve.

REFERENCES:
patent: 981271 (1911-01-01), Hutchins
patent: 1172421 (1916-02-01), Beck
patent: 1724891 (1929-08-01), Anderson
patent: 2057333 (1936-10-01), Guibert
patent: 2229829 (1941-01-01), Watson
patent: 2373654 (1945-04-01), Beekley et al.
patent: 2417994 (1947-03-01), Sheets
patent: 2573369 (1951-10-01), Snoody
patent: 2965117 (1960-12-01), Gallacher
patent: 3097762 (1963-07-01), Charnota et al.
patent: 3112094 (1963-11-01), Nees et al.
patent: 3556464 (1971-01-01), Griswold

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