Threaded cap with inner plug

Details Threaded cap with inner plug Threaded cap with inner plug

1982-01-05

1983-07-26

Norton, Donald F.

Bottles and jars

Closures

Cap type

215354, B65D 4104

Patent

active

043949231

ABSTRACT:
A bottle cap composed of a cap body and an inner plug to be fitted inside the cap body. The cap body has an annular groove in the upper part of the inner wall. The inner plug is provided, at the uppermost part of the pot-shaped plug body, with an outwardly extending annular radial flange, which is provided on the lower face thereof with an annular shoulder to constitute an upper portion with a larger diameter and a lower portion with a smaller diameter, wherein said larger diameter portion engages said annular groove of the cap body while said smaller diameter portion has a lower face which engages the uppermost brim of the bottle mouth when the cap is mounted on the bottle. Thus the cap of the present invention can be mounted separately in the order of the inner plug and then the cap body, or mounted together in a pre-assembled state, and is always removed as a unit from the bottle.

REFERENCES:
patent: 3462034 (1969-08-01), Friedberg
patent: 3940005 (1976-02-01), Granat
patent: 3944103 (1976-03-01), Cros

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