Vented teat

A - Human Necessities – 61 – J

Patent

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Details

A61J 11/02 (2006.01)

Patent

CA 2603355

A teat for a feeding bottle has a one-way valve 16 located remotely from the nipple of the teat to allow air to enter the feeding bottle to replace liquid sucked out of the bottle through the nipple while preventing liquid from leaking from the bottle. The one-way valve 16 comprises an inwardly-oriented depression having opposed mutually inclined sidewalls lea and 16b meeting along a ridge having a slit. In the invention, when undeflected, the side walls lea and 16b make line contact with one another at the ridge and the thickness of the side walls is less than 0.4 mm so that, when acted upon by an increased pressure in the feeding bottle, the side walls collapse against one another and make sealing contact along a surface that extends from the ridge in the direction away from it.

L~invention se rapporte à une tétine pour un biberon ayant une valve unidirectionnelle (16) située à distance du mamelon de la tétine pour permettre à l~air de pénétrer dans le biberon pour remplacer le liquide soutiré du biberon par le mamelon en empêchant le liquide de couler du biberon. La valve unidirectionnelle (16) comprend une dépression orientée vers l~intérieur ayant des parois latérales lea inclinées opposées l~une l~autre et (16b) se joignant le long d~une arête munie d~une fente. Dans l~invention, lorsque les parois latérales lea sont déviées, elles et (16b) forment un contact entre lignes l~une avec l~autre au niveau de l~arête et l~épaisseur des parois latérales est inférieure à 0,4 mm afin que les parois latérales s~effondrent l~une contre l~autre lorsqu~elles sont activées par une pression en augmentation du biberon, et qu~elles forment un contact de scellement le long de la surface s~étendant à partir de l~arête et dans une direction opposée à celle-ci.

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