Push pull dispensing closure

Details Push pull dispensing closure Push pull dispensing closure

1997-02-13

1999-08-03

Huson, Gregory L.

Dispensing

With lock or fastening seal

Inhibiting operation of flow controller or closure

222499, 222525, B65D 572

Patent

active

059313501

ABSTRACT:
A dispensing closure for installation on a bottle finish having a mouth comprises a cap which covers the mouth, and an upwardly bowed diaphragm between the cap and the mouth, normally in contact with the cap. The mouth has a concave frustoconical end surface, and the cap has a circular rib overlying the end surface so that when the cap is pressed downward, it depresses the diaphragm, opening a flow path through an aperture in the cap. In one embodiment of this invention, a sealing interface is formed between the diaphragm and the bottom of the cap, around the aperture, while in another embodiment, a seal is formed around a central aperture in the diaphragm by a protrusion on the bottom surface of the cap.

REFERENCES:
patent: 3232499 (1966-02-01), Esposito
patent: 3321114 (1967-05-01), Croyle
patent: 5465876 (1995-11-01), Crisci

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