Dispensing – With discharge assistant – With biasing means for discharge assistant and/or its casing
Patent
1992-06-30
1993-08-31
Huson, Gregory L.
Dispensing
With discharge assistant
With biasing means for discharge assistant and/or its casing
222183, 222326, 222390, B65D 8854
Patent
active
052401529
ABSTRACT:
A dispenser comprises a container, a product-containing bag disposed within the container, and a valve for discharging product from the bag. A piston is disposed beneath the bag and is raisable by a manually rotatable post which is threadedly connected to a central through-hole of the piston. A closed-cell foam element is disposed between the piston and the bag and is elastically compressed when the piston is raised, in order to store energy and pressurize the contents of the bag. A stiff disc is disposed between the foam element and the bag and includes a central through-hole. The threaded post extends upwardly through the piston, the foam element, and the disc, and terminates within a downwardly open cavity formed in the bag. The valve and bag are connected to the container to be removed therefrom as a unit and replaced by a similar refill unit.
REFERENCES:
patent: 1443910 (1923-01-01), Zearing, Jr. et al.
patent: 1476946 (1923-12-01), Bessesen
patent: 1664936 (1928-04-01), Lyman
patent: 2728097 (1955-12-01), Seifert
patent: 3195168 (1965-07-01), Roberts
patent: 3951310 (1976-04-01), Steiman
patent: 5042696 (1991-08-01), Williams
patent: 5139178 (1992-08-01), Arch et al.
patent: 5143259 (1992-09-01), Williams
Huson Gregory L.
Williams Dispenser Corporation
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