Manually controllable, pressure operated closure

Details Manually controllable, pressure operated closure Manually controllable, pressure operated closure

1974-06-13

1976-10-05

Knowles, Allen N.

Dispensing

Outlet element operated by pressure of contents

Reciprocable, nonpivoted

B65D 572

Patent

active

039840352

ABSTRACT:
A closure unit for compressible containers and other types of fluid outlets wherein the container is provided with an extension having an opening leading from the container to the extension upon which the closure unit is supported. The closure unit is provided with a fixed stem centrally located of the extension and a separate flexible closed-end sleeve having a central opening through the closed end adapted to overlie the extended portion of the container and the stem, and to be axially movable relative to the stem. The sleeve is provided with a rigid outer side portion and an outer end portion of which at least a portion is provided with a predetermined amount of elasticity. The central opening in the sleeve is slightly less in diameter than the outer end of the stem and when in its outer position will rest lightly on the top of the stem and will flex outwardly to allow the container contents to pass about the stem and out through the opening when pressure is applied to the container, and when the sleeve is in its inward position the sleeve is forced inwardly over the outer end of the stem to provide a definite closure for the opening in the container.

REFERENCES:
patent: 2314538 (1943-03-01), Hollenbeck
patent: 3297212 (1967-01-01), Neuner
patent: 3545682 (1970-12-01), Beard
patent: 3549060 (1970-12-01), Smylie
patent: 3777948 (1973-12-01), Hafele

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