Non-inverting fluid dispenser

Details Non-inverting fluid dispenser Non-inverting fluid dispenser

1979-08-10

1981-07-21

Tollberg, Stanley H.

Dispensing

Collapsible wall-type container

Plural container and/or compartment

222212, B65D 3522

Patent

active

042793637

ABSTRACT:
A fluid dispenser particularly for use at the bottom of a deformable or partly flexible container is disclosed, which dispenser includes a base member having therein a vent providing an air passage controlled by a valve, and a fluid dispensing passage also controlled by a valve. The exterior air vent tube and exterior dispensing tube of the dispenser are usually sealed until the first use of the dispenser, at which time the container is substantially fixed in place with the dispenser at the bottom thereof, and the seals of the exterior air vent and dispensing tubes are broken. The dispensing action is carried out by pressing a deformable portion of the container thereby increasing the pressure within the container, and in the normal, inverted position of the container with the dispenser at the bottom thereof--i.e., the dispensing action is non-inverting. Alternatively, particularly where an air/fluid contact is to be precluded, a bladder may be placed within the container, having fluid communication with the air passage, for expansion and pressure equalization as the dispensing action continues. In yet another alternative, the bladder may be filled with fluid.

REFERENCES:
patent: 3656660 (1972-04-01), Mueller
patent: 3945366 (1976-03-01), Matthews
patent: 4099655 (1978-07-01), Por
patent: 4159790 (1979-07-01), Bailey

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