Self-closing closures

Details Self-closing closures Self-closing closures

1973-12-14

1976-04-27

Reeves, Robert B.

Dispensing

Outlet element operated by pressure of contents

Spring form, resilient or compressible flow controller or...

B65D 3550

Patent

active

039529266

ABSTRACT:
A self-closing structure has a tube having a free end surrounded by a funnel shaped end of a cylinder supported on a diaphragm capable of being mounted on the open top of an elastically yielding container and upon compressing said container forcing the contents thereof against said diaphragm the funnel shaped end moves along said tube allowing said content to be extruded and upon the release of the container said funnel shaped end returns below said tube free end and is closed thereby. The release of the container due to its elastically creates a suction thereof drawing air down said tube into said container. A valve can be mounted below said tube normally closing the same, but being opened only for the suction in said container.

REFERENCES:
patent: 1640782 (1927-08-01), Lentz
patent: 1880103 (1932-09-01), Murdoch
patent: 1905936 (1933-04-01), Heard
patent: 3176883 (1965-04-01), Davis, Jr.
patent: 3656660 (1972-04-01), Mueller
patent: 3807608 (1974-04-01), Nilsson

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