Method for irreversibly fixing a cap on a container head...

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 47/24 (2006.01) B65D 47/20 (2006.01)

Patent

CA 2348712

The invention concerns an assembly consisting of a head (1, 1', 200) and an overcap (30, 30', 30'', 300), the head having a cylindrical neck provided with a helical screw thread (21), the overcap having a cylindrical skirt (31) provided with a thread (36) matching the neck thread (21). The overcap carries an axial plate (33) radially flexible and circumferentially rigid. The neck base (10) is provided with at least an opening stop (12), and at least a closure stop (11), of lesser height. When the overcap (30) is screwed on the head for mounting the assembly, the free end of the axial plate is urged into contact with a first wall (14) of the opening stop (12) and the axial plate whereof the free end is urged by a centrifugal motion, is elastically deformed, then, folds down towards the neck in a space between the opening (12) and closure (11) stops, its displacement being thereby restricted.

Ensemble d'une tête (1, 1', 200) et d'un capot (30, 30', 30'', 300), la tête ayant un goulot cylindrique muni d'au moins un filet de vissage hélicoïdal (21), le capot ayant une jupe cylindrique (31) munie d'un filet (36) complémentaire à celui (21) du goulot. Le capot porte une lame axiale (33) flexible radialement et rigide circonférentiellement. La base (10) du goulot est munie d'au moins une butée d'ouverture (12), et d'au moins une butée de fermeture (11), de hauteur plus faible. Lorsque le capot (30) est vissé sur la tête pour le montage de l'ensemble, l'extrémité libre de la lame axiale arrive en contact avec une première paroi (14) de la butée d'ouverture (12) et la lame axiale, dont l'extrémité libre se voit imposer un mouvement centrifuge, se déforme élastiquement, puis, se rabat vers le goulot dans un espace compris entre les butées d'ouverture (12) et de fermeture (11), son déplacement étant alors limité.

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