Venting bottle closure

Bottles and jars – Closures – With pressure-responsive valve

Patent

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Details

215307, B65D 5116

Patent

active

039660710

ABSTRACT:
A pressure relieving bottle closure is disclosed. The closure is of thin metal construction having an internal sealing disc and adapted to be received by a preferably screw threaded bottle neck to form top and side seals with finish surfaces of the bottle. The sealing material comprises a resilient liner within the closure. In the area of the side skirt of the metal portion of the closure which forms the area disposed over the side seal is at least one opening. If excessive pressure develops inside the bottle, pressurized fluid first escapes through the top seal of the bottle and, upon reaching the area of the side seal over which the said opening is located, pushes the sealing liner outwardly into the opening to escape through the side seal to the exterior of the bottle. The closure again seals when the excess pressure has been relieved, provided that the sealing material used possesses sufficient resiliency.

REFERENCES:
patent: 1575464 (1926-03-01), Tamura
patent: 2389761 (1945-11-01), Burgeni
patent: 2428782 (1947-10-01), Browne
patent: 2446226 (1948-08-01), Glocker
patent: 2726002 (1955-12-01), Dalianis
patent: 3114467 (1963-12-01), Montgomery
patent: 3303955 (1967-02-01), Osborne
patent: 3349975 (1967-10-01), Damron

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