Expulsion bladder

Details Expulsion bladder Expulsion bladder

1975-02-18

1977-03-22

Knowles, Allen N.

Dispensing

Collapsible wall-type container

With wall-collapsing means

222107, 222189, 2223865, 210159, B65D 3528

Patent

active

040131955

ABSTRACT:
A liquid expulsion device having a tank enclosing a flexible bladder containing liquid to be expelled and an insoluble gas. Prior to expulsion the combined liquid and gas volume remains constant so that during environmental changes the bladder is forced into intimate flush contact with the tank and is incapable of flexing and becoming ruptured. Liquid is expelled through a surface tension screen that blocks passage of the gas.

REFERENCES:
patent: 3067810 (1962-12-01), Mozic
patent: 3175882 (1965-04-01), Meermans
patent: 3286463 (1966-11-01), McGroarty
patent: 3339803 (1967-09-01), Wayne et al.
patent: 3404813 (1968-10-01), Waxman
patent: 3486302 (1969-12-01), Paynter
patent: 3883046 (1975-05-01), Thompson

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