Fluid handling – With leakage or drip collecting
Patent
1985-09-05
1988-08-09
Schwadron, Martin P.
Fluid handling
With leakage or drip collecting
137494, 251282, F16K 31363
Patent
active
047621419
ABSTRACT:
A fluid flow regulator including a servo valve assembly and a throttle valve assembly. The servo valve assembly includes a pair of double acting actuators, biased in one direction by an adjustable spring, contoured ports and piping passageways to the ports and to other chambers of the assembly. The actuators are effectively connected together and function to oppose each other. The chambers formed between the two actuators and the respective cylinder chambers formed on the exterior ends of each actuator are used for pressure sensing purposes. Each individual actuator may be comprised of up to three piston lands with adequate separation between to form chambers for fluid transfer purposes. Any leakage or servo flow entering these chambers would be communicated by passageways to appropriate interface ports on the regulator. Due to its sensitivity, the servo valve assembly effects a desired action by variably restricting the flow or pressure in a passageway controlled by the throttle valve assembly. This result is achieved by throttle valve control.
REFERENCES:
patent: 1186780 (1916-06-01), Hennebohle
patent: 2411930 (1946-12-01), Mathys
patent: 2597582 (1952-05-01), Gruss
patent: 2767726 (1956-10-01), Feucht
patent: 2890715 (1959-06-01), Ebersold
patent: 3143134 (1964-08-01), Karpis
patent: 3707984 (1973-01-01), Bantz
patent: 3774629 (1973-11-01), Enomoto
patent: 3840039 (1974-10-01), Shellman
Hepperle Stephen M.
Schwadron Martin P.
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