Metered dispensing of liquids

Details Metered dispensing of liquids Metered dispensing of liquids

1979-12-17

1983-07-19

Knowles, Allen N.

Dispensing

Resilient wall

Fluid pressure generating pump or pulsator and/or removable...

222214, 222530, B65D 8300

Patent

active

043939821

ABSTRACT:
A container from which liquid is dispensed has a metering chamber arranged t its mouth. A metering device is arranged to cooperate with the outside of this metering chamber to control the amount of liquid allowed to flow out. The flow can be controlled either by determining the time for which the metering device opens the metering chamber, or by constructing the metering chamber as a pump chamber of a specified volume so that the metering device pumps the liquid out of the chamber and therefore dispenses a predetermined volume. In the second method, the metering chamber includes an axially compressible bellows portion which forms a pump chamber. Non-return valves are provided at both ends of the pump chamber, and the metering device comprises plates on either side of the bellows section which can be drawn towards one another to squeeze the bellows section.

REFERENCES:
patent: 2299572 (1942-10-01), Estenes
patent: 2554570 (1951-05-01), Harvey
patent: 2772817 (1956-12-01), Jauch
patent: 2824672 (1958-02-01), Wersching
patent: 3162335 (1964-12-01), Kogan et al.
patent: 3390860 (1968-07-01), Kavanau
patent: 4030640 (1977-06-01), Citrin

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