Self-venting closure

Details Self-venting closure Self-venting closure

B - Operations, Transporting

65

D

B65D 51/16 (2006.01) B65D 41/04 (2006.01)

Patent

CA 2586984

A closure 10 for a container, comprises a substantially circular base 20, a skirt 30 extending from the periphery thereof, a bore seal 50 in the form of an annulus and a rib 70 lying on the surface of the base 20 in a substantially radial direction and in contact with the radially inner surface of the bore seal 50 at one end for transferring any movement of the centre of the base 20, relative to the skirt 30, to the bore seal 50 such that the bore seal 50 is pulled radially inward to allow venting of excess pressure within the container, wherein the end of the rib 70 in contact with the radially inner surface of the bore seal 50 is substantially thinner, in a plane parallel to the base 20, than the other end of the rib 70.

Fermeture 10 pour conteneur, comportant une base sensiblement circulaire 20, une jupe 30 se prolongeant de la périphérie de celle-ci, un joint d~alésage 50 en forme d~anneau et une nervure 70 située à la surface de la base 20 dans un sens sensiblement radial et en contact avec la surface radialement interne du joint d~alésage 50 à une extrémité pour transférer tout mouvement du centre de la base 20, par rapport à la jupe 30, au joint d~alésage 50 de façon que le joint d~alésage 50 soit tiré radialement vers l~intérieur pour permettre la ventilation d~un excès de pression dans le conteneur, l~extrémité de la nervure 70 en contact avec la surface radialement interne du joint d~alésage 50 étant sensiblement plus mince, sur un plan parallèle à la base 20, que l~autre extrémité de la nervure 70.

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