Water bottle plug and method for manufacturing the said plug

Details Water bottle plug and method for manufacturing the said plug Water bottle plug and method for manufacturing the said plug

B - Operations, Transporting

67

D

B67D 3/00 (2006.01) B29C 45/44 (2006.01) B29C 45/00 (2006.01) B29C 45/40 (2006.01)

Patent

CA 2418456

The invention relates to an obturation cap for a liquid container intended to be used in upside down position in a liquid dispenser provided with a feeding system including a feed tube, said cap comprising a lid provided with a central opening; an annular skirt extending in a given direction all around an external periphery of the lid, said skirt being provided with a central axis and being devised and sized to be connected to the neck of the container; an annular sleeve extending all around the central opening of the lid in the same direction as the skirt and coaxially therewith, the central opening and the sleeve surrounding the same being both sized to receive and guide the feed tube of the liquid dispenser used with the container closed by the cap; and a plug fixed in a detachable manner by means of a frangible connection to a free edge of the sleeve opposite to the central opening, said plug being coaxial to the sleeve and devised to be separated from the same when the container closed by the cap is inserted into the liquid dispenser, the frangible connection between the sleeve and the plug being located in an angularly oriented inlet zone made in the free edge of the sleeve for, on one hand, facilitating tearing of the frangible connection during insertion of the cap onto the feed tube of the liquid dispenser and, on the other hand, facilitating engagement of the plug within the sleeve during extraction of the feed tube, the plug then acting as an obturator, said plug being also provided with internal gripping means for fixing it temporarily to an upper end of the feed tube during water flow, and with external sealing means for closing the sleeve when the container is removed from the liquid dispenser, the plug being then pulled back to the sleeve and forced into the same by the feed tube while the same is extracted from the sleeve, said lid, said skirt, said sleeve and said plug of the cap being molded in one piece without welding or adjunction of additional component or removable piece. Another object of the invention is to provide a method for manufacturing this cap.

L'invention vise un bouchon à obturateur pour bidon destiné à être utilisé dans une fontaine pourvue d'un système d'alimentation incluant un tube d'alimentation. Ce bouchon comprend un capuchon pourvu d'une ouverture centrale et d'une jupe annulaire. Il comprend aussi un fût annulaire s'étendant autour d'une ouverture prévue dans un couvercle et une capsule fixée de façon détachable au moyen d'un mince de déchirement à même une arête libre du fût opposée à l'ouverture. Cette capsule étant conçue pour pouvoir être séparée du fût. Une première caractéristique de ce bouchon est que le mince de déchirement reliant le fût à la capsule est placé dans une zone d'entrée à angle faite dans l'arête libre du fût pour, d'une part, faciliter une rupture franche du mince de déchirement lors de l'emmanchement du bouchon sur le tube d'alimentation de la fontaine et d'autre part, faciliter l'engagement de la capsule dans le fût lors de l'extraction du tube d'alimentation. Une deuxième caractéristique est qu'au moins une lèvre d'étanchéité est située sur la surface interne du fût pour améliorer l'étanchéité du bouchon en plus d'assurer un préalignement de la capsule dans le fût lors de l'extraction du tube d'alimentation. Une troisième caractéristique est que le capuchon, la jupe, le fût et la capsule du bouchon sont moulés d'une seule pièce, sans soudure ni adjonction d'autre composant ou pièce amovible. L'invention vise aussi une méthode de fabrication de ce bouchon, par injection décalée dans un rayon extérieur au capuchon.

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