Ratchets for bottle necks

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 1/02 (2006.01) B65D 41/34 (2006.01)

Patent

CA 2334036

Bottle necks (11) for screw-off caps are provided with external threads (14) to mesh with internal cap threads and external ratchet teeth (22) to engage internal cap ratchet teeth. The corners (28) are rounded off in a radius (R1) having its center offset from the intersection of the working flank (26) of the tooth (22) and the minor ratchet diameter (D1) without detrimentally reducing the length of the working flanks (26). Ratchet teeth (22) are usually located in two diametrically opposed quadrants. The transition tooth (23) of each quadrant has a greater radius than that of subsequent teeth and its center is inset toward the neck axis. In advance of the transition tooth (23) is a protective "tooth" (24) which is rounded and has no working flank (26).

L'invention concerne des goulots de bouteilles (11) destinés à des capsules dévissables, les goulots de bouteilles comprenant des filetages (14) extérieurs destinés à s'engrener avec des filetages intérieurs des capsules, et des dents (22) extérieures d'encliquetage destinées à s'engrener avec des dents intérieures d'encliquetage des capsules. Les coins (28) sont arrondis au plus près dans un rayon (R1) dont le centre est décalé de l'intersection du flanc avant (26) des dents (22) et du diamètre (D1) mineur du cliquet sans réduire de manière préjudiciable la longueur des flancs avant (26). Les dents d'encliquetage (22) sont d'habitude disposées dans deux quadrants diamétralement opposés. La dent de transition (23) de chaque quadrant présente un rayon supérieur à celui des dents suivantes et son centre est inséré vers l'axe du goulot. Avant la dent de transition (23) se trouve une "dent" protectrice (24) arrondie et ne possédant pas de flanc avant (26).

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