Vented closure

Details Vented closure Vented closure

1981-07-17

1983-05-10

Norton, Donald F.

Bottles and jars

Closures

Receptacle interior communicable with exterior with closure...

B65D 5116

Patent

active

043825214

ABSTRACT:
A thermoplastic closure suitable for fitment to a threaded container neck is disclosed. The closure has a top wall with an annular sidewall depending therefrom. To provide a gas-tight seal between the closure and the container, there is provided a gas-tight sealing system above the closure thread. About the inside surface of the annular sidewall is an extended closure thread which, due to its extent, requires the user to make two turning motions to achieve removal of the closure from the container. By requiring two turning motions, sufficient time is provided for venting of any pressurized gas from the container to the atmosphere. This venting can be facilitated by the utilization of any conventional venting means.

REFERENCES:
patent: 2990079 (1961-06-01), Garvey
patent: 3010596 (1961-11-01), Williams et al.
patent: 3144154 (1964-08-01), Puse et al.
patent: 3612325 (1971-10-01), Williams
patent: 4007851 (1977-02-01), Walker
patent: 4206852 (1980-06-01), Dunn et al.

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