Port closure system with hydraulic hammer resistance

Details Port closure system with hydraulic hammer resistance Port closure system with hydraulic hammer resistance

B - Operations, Transporting

65

D

B65D 47/20 (2006.01)

Patent

CA 2736739

A port closure system (20) including a port structure (22), and a valve (24). The port structure (22) includes a port (28) for establishing communication between an exterior environment (30) and interior volume (32) that can receive a fluent substance. The valve (24) includes a flexible, resilient, self-closing, slit-type valve head (36) with an orifice that is normally closed in an unconstrained condition. The port (28) has a laterally inwardly facing engaging surface (34) and the valve has a laterally outwardly facing peripheral surface (54) that is compressed laterally inwardly by engagement with the surface (34) to increase the resistance of the normally closed orifice to opening when the head (36) is subjected to a pressure differential.

L'invention concerne un système de fermeture d'orifice (20) comprenant une structure d'orifice (22), et une soupape (24). La structure d'orifice (22) comprend un orifice (28) permettant d'établir la communication entre un environnement extérieur (30) et un volume intérieur (32) pouvant recevoir une substance fluante. La soupape (24) comprend une tête de soupape du type à fente, flexible, élastique et à fermeture automatique (36) avec une ouverture qui est normalement fermée dans un état non contraint. L'orifice (28) a une surface de mise en prise orientée vers l'intérieur dans le sens latéral (34) et la soupape a une surface périphérique orientée vers l'extérieur dans le sens latéral (54) qui est comprimée vers l'intérieur dans le sens latéral par mise en prise avec la surface (34) pour accroître la résistance à l'ouverture de l'ouverture normalement fermée quand la tête (36) est soumise à une pression différentielle.

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