Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1986-04-01
1987-11-17
Cohan, Alan
Fluid handling
Line condition change responsive valves
Direct response valves
1374542, 137469, 13751627, 1375395, F16K 2110
Patent
active
047067055
ABSTRACT:
A miniaturized check valve comprises a generally tubular body including a cylindrical base and a guide sleeve of reduced diameter which axially extends from the base. The body forms a an interior valve seat which surrounds an axially extending fluid passageway. The guide sleeve has a plurality of angularly spaced discharge openings and a pair of pilot orifices which are axially spaced from the valve seat. A valve ball is displaced from the valve seat to form a fluid flow path which extends generally axially through the valve seat and into the guide sleeve and thereafter generally radially through the orifices and openings for flow exteriorly of the guide sleeve. The ball is biased by a spring assembly which comprises a pair of axially aligned springs having a relatively low pre-load force and low spring rate.
REFERENCES:
patent: 1094267 (1914-04-01), Sullivan
patent: 1798631 (1931-03-01), Rodler
patent: 2431769 (1947-12-01), Parker
patent: 2632458 (1953-03-01), Slomer
patent: 2858838 (1958-11-01), Scaramucci
patent: 3072144 (1963-01-01), Cassell
patent: 3347266 (1967-10-01), Hansen
patent: 3375844 (1968-04-01), Mercier et al.
patent: 3589386 (1971-06-01), Chapman et al.
patent: 3746038 (1973-07-01), Simmons
patent: 3894556 (1975-07-01), Pareja
Cohan Alan
Rivell John A.
The Lee Company
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