Stopper device for a recipient, process for manufacturing same and recipient fitted with such a device

Abstract From the Canadian patent

The invention relates to the stopping of recipients with a neck by a capsule comprising a tapped stopper extended in its lower part by a guarantee strip internally presenting an annular bead and which is joined to the stopper by a zone of connection with low mechanical resistance, wherein the upper face of said inner bead is substantially perpendicular to the axis of the capsule and whilst this upper face is joined by a marked angle to a starting face, the lower face of the bead joins a precentering slope. The capsule is demoulded by application of a torque causing the inner bead to pivot outwardly. The capsule made of plastics material, may be used on bottles of water.