Liquid dispenser using a non vented pump and a collapsible plast

Details Liquid dispenser using a non vented pump and a collapsible plast Liquid dispenser using a non vented pump and a collapsible plast

1975-03-20

1977-02-22

Tollberg, Stanley H.

Dispensing

Collapsible wall-type container

With wall-collapsing means

B65D 3528

Patent

active

040088308

ABSTRACT:
A liquid dispenser which permits dispensing liquid or viscous semi-liquid products from an unpressurized container using a non-vented pump in which a rigid outer container open on one end and having a breathing hole holds a flexible collapsible bag, filled with the product to be dispensed; the bag is affixed to the container as by extending through the open container end and the bag ends overlapping the containers edges, and the non-vented pump installed therein placed on or over the open container end so as to seal the bag against the outer container. When operated, the force of the atmospheric pressure, acting through the hole, partially collapses the bag, and forces the liquid to be dispensed into the pump.

REFERENCES:
patent: 2612296 (1952-09-01), Campbell et al.
patent: 2671578 (1954-03-01), McBean
patent: 3070265 (1962-12-01), Everett
patent: 3211346 (1965-10-01), Meshberg
patent: 3223289 (1965-12-01), Bouet
patent: 3342377 (1967-09-01), Peredy
patent: 3378169 (1968-04-01), Clark
patent: 3549050 (1970-12-01), Bruce

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