Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1982-03-08
1984-01-31
Cohan, Alan
Fluid handling
Line condition change responsive valves
Direct response valves
137540, 251136, 74409, 744248VA, F16K 1706
Patent
active
044283989
ABSTRACT:
A pressure control valve including a valve, a spring for pressing the valve, and a power input means for compressing the spring further comprises a backup force-generating mechanism for producing and directing a backup force counter to the direction in which the reaction force due to the compression of the spring is exerted on the input means, so as to impart the backup force to the input means.
REFERENCES:
patent: 1148478 (1915-07-01), Jepson
patent: 2679167 (1954-05-01), Nichinson
patent: 2735669 (1956-02-01), Seiler
patent: 3839662 (1974-10-01), N'Guyen Van
patent: 3856042 (1974-12-01), Fletcher et al.
patent: 4305307 (1981-12-01), Kiunke
Mito Akio
Tanaka Kentaro
Cohan Alan
Petock Michael F.
Rivell John A.
Tokyo Keiki Co. Ltd.
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