Flexible dispenser with bladder

Details Flexible dispenser with bladder Flexible dispenser with bladder

1995-05-31

1997-11-18

Huson, Gregory L.

Dispensing

Resilient wall

With flow controllers or closures

2223865, 2224815, B65D 3700

Patent

active

056878826

ABSTRACT:
A dispenser for fluid material includes a flexible container. A piston is adapted for movement within the container. An expansible bladder is connected to the piston. A first flow restrictor allows flow of displacement fluid only from outside the container into the interior of the bladder. A second flow restrictor allows flow of material only from within an interior portion of the container external to the bladder to outside the container. The container also preferably includes a rod supported in the container, the piston being movable on the rod. In another embodiment the bladder is connected to a collar movable on the rod.

REFERENCES:
patent: 3319837 (1967-05-01), Mueller
patent: 3656660 (1972-04-01), Mueller
patent: 3847307 (1974-11-01), Hosek
patent: 4239132 (1980-12-01), Mueller et al.
patent: 4760937 (1988-08-01), Evezich

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