Fluid handling – Self-proportioning or correlating systems – Self-proportioning flow systems
Patent
1981-01-12
1983-01-25
Spiegel, H. Jay
Fluid handling
Self-proportioning or correlating systems
Self-proportioning flow systems
222 57, 222250, 137 99, G05D 1100
Patent
active
043698050
ABSTRACT:
A liquid metering injector assembly for injecting metered quantities of a first liquid into respective metered quantities of a second liquid comprising a metering cylinder, metering ports formed at either end of the metering cylinder; a metering piston displaceable in the metering cylinder; a valve unit having a valve inlet for coupling to a pressurized source of the first liquid; means for coupling the valve to a hydraulic pulse source; a valve outlet for coupling to a source of the second liquid; a pair of communication valve ports of said valve unit respectively communicating with the metering ports and selectively communicatable with the valve inlet and outlet and a displaceable spool valve of the valve unit responsive to the hydraulic pulses so as to be displaceable between two positions in which the respective communication of the valve unit communicating ports with the valve unit inlet and outlet are successively reversed.
REFERENCES:
patent: 3216627 (1965-11-01), Best et al.
patent: 3283667 (1966-11-01), Andersen
patent: 3283957 (1966-11-01), Henderson
patent: 3370759 (1968-02-01), Johansson
patent: 3448754 (1969-06-01), Crabtree
patent: 3497105 (1970-02-01), DeGiorgi et al.
patent: 3642171 (1972-02-01), Ernst
patent: 3968971 (1976-07-01), Mariaulle
patent: 4007755 (1977-02-01), Lerner et al.
patent: 4012176 (1977-03-01), Drori
patent: 4111607 (1978-09-01), Tavor
Amiad Mutzarei Yiul
Spiegel H. Jay
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