Dispensing – Plural sources – compartment – containers and/or spaced jacket – With discharge assistant for each source
Patent
1977-06-17
1979-07-17
Spar, Robert J.
Dispensing
Plural sources, compartment, containers and/or spaced jacket
With discharge assistant for each source
222183, 222214, 222440, 251 5, B65D 3700
Patent
active
041612647
ABSTRACT:
A metering device for delivering a fluid at a predetermined rate and a mixing device for delivering first and second fluids at a predetermined rate mixed in a predetermined ratio. The devices include a flexible fluid bladder having flexible inlet and outlet conduits, a flexible inlet conduit clamp tube overlying the inlet conduit, and a flexible outlet conduit clamp tube overlying the outlet conduit, all of which are positioned between a pair of abutting rigid plates having matching voids. As each of the clamp tubes are pressurized, the inlet or outlet conduits over which they lie are collapsed to prevent fluid flow therethrough. A valve system is provided for alternating between a fill cycle wherein the outlet conduit clamp tube is pressurized and the inlet conduit clamp tube is depressurized to allow fluid to flow into the fluid bladder, and a discharge cycle wherein the inlet conduit clamp tube is pressurized and the outlet conduit clamp tube is depressurized to allow fluid to flow from the fluid bladder. The rate at which the metering device delivers fluid is thus proportional to the product of the fluid bladder volume and the operating frequency of the valve system. A mixing device may be implemented by providing a second fluid bladder which is alternately filled and discharged into the outlet conduit of the first fluid bladder so that the fluids are mixed at a ratio corresponding to the volume of the first bladder to the volume of the second bladder.
REFERENCES:
patent: 547848 (1895-10-01), Davis
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patent: 4042153 (1977-08-01), Callahan et al.
Johnson Bryan E.
Malmgren Arthur L.
Silverberg Fred A.
Spar Robert J.
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