Patent ID: 8403159

Claim:
A stopper device for stopping a neck of a container, said stopper device comprising: a support that is substantially tubular, that defines a first axis, that is suitable for being secured to the neck, and that is provided with a fastener tab extending from the support along a second axis that is substantially perpendicular to the first axis; a cap that has a substantially annular section and that is also hinged to the support to pivot between a closed position and an open position, the fastener tab being suitable for engaging in an opening provided in the cap when said cap is in the closed position; and a tamper-proofing band having a substantially annular section, wherein the tamper-proofing band is carried movably by the support and is connected to the cap in its closed position via at least one breakable bridge, wherein the at least one breakable bridge is situated along a third axis in a portion of the tamper-proofing band, and wherein the third axis is substantially perpendicular to the first axis and the second axis when the cap is in the closed position, wherein the cap is configured to be pivoted for a first time from the closed position to the open position by squeezing laterally along the third axis, wherein during a first stage of the squeezing, the at least one breakable bridge is configured to be broken, and during a second stage of the squeezing after the first stage, the fastener tab is configured to disengage from the opening of the cap.