Dispensing – Volume or rate of flow metering
Patent
1991-01-14
1991-11-19
Huppert, Michael S.
Dispensing
Volume or rate of flow metering
222 59, 91499, 73244, B67D 516
Patent
active
050659030
ABSTRACT:
A delivery system for controlling the flow of fluid is disclosed. The comprises a control valve comprising an electric control motor and a valve, and a hydraulic piston type motor including a shaft which is rotated when fluid flows through the system. The rate at which fluid flows into the system is measured by the hydraulic motor and is reflected by the rate at which the hydraulic motor shaft rotates. The rate at which fluid flows through the system is controlled by the control valve. The control valve is movable between a first position in which a first fluid flow rate through the system is achieved and a second position is which a second flow rate higher than the first rate is achieved. The control motor is responsive to an external signal which indicates a rate rotation for the control motor corresponding with a rate of fluid flow. The control motor shaft, the hydraulic motor shaft and the control valve are dynamically connected so that, when the rate at which fluid id flowing through the system is less than the given rate, the control valve is moved towards the second position and, when the rate at which fluid is flowing through the system is greater than the given rate, the control valve is moved towards the first position. A fluid component dosing apparatus including at least one hydraulically actuated dosing pump driven by a delivery system according to the invention is also disclosed.
REFERENCES:
patent: 575991 (1897-01-01), Schonheyder
patent: 1438847 (1922-12-01), Miller
patent: 1985400 (1934-12-01), Blum
patent: 2040390 (1936-05-01), Loe
patent: 2625914 (1953-01-01), Pressler
patent: 3308664 (1967-03-01), Kullmann
patent: 3772917 (1973-11-01), Lutz et al.
patent: 4132483 (1979-01-01), Slaats et al.
patent: 4211148 (1980-07-01), Boss
Huppert Michael S.
Huson Gregory L.
Purdue David C.
Purdue John C.
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