Self locking container closure

Details Self locking container closure Self locking container closure

1981-10-23

1983-07-26

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

B65D 4148

Patent

active

043949207

ABSTRACT:
A one-piece container closure for use with pressurized containers, such as champagne bottles. The closure includes a shank attached to a top for sealing the bottle. An expandable skirt depends from the top and surrounds a ring on the bottle neck. A plurality of retaining shoulders extend inwardly from the skirt to engage a lower surface on the neck ring. A retaining ring shaped to conform to the shape of the skirt is frangibly attached to the lower edge of the skirt to inhibit the radial expansion of the lower edge of the skirt to keep the cap on the bottle. To remove the cap, the retaining ring is first separated from the lower edge of the skirt. The retaining ring is then slid up towards the top of the cap or down off of the skirt to allow the skirt to expand radially which permits the retaining shoulders to become disengaged from under the neck ring when the cap is pulled upwardly.

REFERENCES:
patent: 3300073 (1967-01-01), Benz
patent: 3462035 (1969-08-01), Grussen
patent: 4230229 (1980-10-01), Crisci
patent: 4331248 (1982-05-01), Jamer

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