Patent ID: 9051090
Filing Date: 2015-06-09
Classification: B65D

Abstract:
1. A stopper device for the neck of a container, including: a base which is tubular and adapted to be fastened to a neck of a container, a cap which is tubular and repeatedly movable relative to the base between a closed position, in which the cap sealably covers the opening of the base, while covering the base at least partially, and an open position, in which the cap is remote from the base to allow a flow through the opening of the base, said cap being moved substantially in the direction of the axis of the base and opposite the neck of the container when the cap moves from the closed position to the open position, and tamper-evident means configured to provide a visual indication of whether the cap has previously moved from the closed position to the open position, said tamper-evident means including a strand which, in an unaltered configuration, extends lengthwise along the periphery of the cap, and a hook element, which is secured integral with the base, protruding toward the outside of the base, wherein the hook element is adapted so that, when the strand is in the unaltered configuration thereof, the hook element retains a longitudinal portion of the strand, in a direction substantially parallel to the axis of the base, so as to block the movement of the cap from the closed position to the open position, and in that a first longitudinal end of the strand is frangibly connected to the cap and is integrally provided with a tab for manually driving the strand so as to detach the first end of the strand relative to the cap, by breaking the frangible connection between them, then to move the longitudinal portion of the strand away toward the outside of the cap, by plastic deformation of a non-frangible connection between a second longitudinal end of the strand and the cap, until the strand reaches an altered configuration in which the cap is free to be moved from the open position to the closed position and from the closed position to the open position without the longitudinal portion of the strand being retained by the hook element, wherein the second end of the strand is provided with a rupturing member configured to not break when the strand has gone from the unaltered configuration to the altered configuration of the strand, and the rupturing member configured to be manually broken so as to separate the strand from the cap after the strand has reached the altered configuration.