Gas pressure operated dispensing container

Details Gas pressure operated dispensing container Gas pressure operated dispensing container

1984-03-20

1985-10-08

Bartuska, F. J.

Dispensing

Collapsible wall-type container

With wall-collapsing means

2223865, 22240221, 22240223, B65D 3528

Patent

active

045455066

ABSTRACT:
There is disclosed herein a gas pressure operated dispensing container for viscous liquids in which a collapsible compartment containing the liquid is mounted inside a pressurized canister and has an end closure fitted with a dispensing valve having a elastomeric valve seal inside the compartment. A rigid reinforcing ring frictionally engages the end closure and prevents collapse of the top portion of the collapsible compartment. The ring has one or more air passages extending from a point on its internal periphery below the area of engagement with the end closure to the top thereof. The air passages are, for example, longitudinal notches in the ring spaced around its circumference and serve to allow air to pass out of the compartment as the end closure is applied.

REFERENCES:
patent: 3662926 (1972-05-01), Umstead
patent: 4121737 (1978-10-01), Kain
patent: 4153182 (1979-05-01), Loeliger

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