System comprising a container having a slit valve as a venting v

Details System comprising a container having a slit valve as a venting v System comprising a container having a slit valve as a venting v

1993-02-11

1995-02-21

Shoap, Allan N.

Bottles and jars

Closures

With pressure-responsive valve

220367, 222490, 222556, 222562, 137845, B65D 5116

Patent

active

053908058

ABSTRACT:
In a system comprising a container and a liquid contained therein that builds up a gas or vapor pressure, a sealing valve having a concave shaped portion and a slit extending through said portion, allows venting of the vapor from the container to the ambient at a predetermined vapor threshold pressure. The vapor threshold pressure at which the slit opens for venting can be adjusted by valve restraining means which are preferably formed by a protrusion at the inside of a cap covering the sealing valve. The vapor threshold pressure at which venting takes place, can to a large extent be adjusted without affecting the dispensing characteristics of the valve.

REFERENCES:
patent: 2162455 (1939-06-01), Hoge
patent: 2254815 (1941-09-01), Barnby et al.
patent: 4341239 (1982-07-01), Atkinson
patent: 4749108 (1988-06-01), Dornbusch et al.
patent: 5143236 (1992-09-01), Gueret

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