초록 ▼

The present invention is concerned with a one-piece pressure resistant container closure including a pilfer proof ring and associated sealing means provided in or towards the crown of the closure whereby it is possible to apply the closure to a container without substantial risk of rupture between a

The present invention is concerned with a one-piece pressure resistant container closure including a pilfer proof ring and associated sealing means provided in or towards the crown of the closure whereby it is possible to apply the closure to a container without substantial risk of rupture between a skirt extension portion of the closure constituting a security ring and the remainder of the closure. To this end, there is provided in combination a closure having a crown portion and a skirt depending from the periphery of the crown portion, the skirt including retaining means to cooperate with corresponding means to retain the closure about a container neck, and characterized by a flexible annular sealing ring depending from an internal surface of the closure inclined inwardly towards the closure axis and adapted to engage in sealing relationship with a container neck, a support ring juxtaposed the sealing ring to limit flexing of the sealing ring on application of the closure to a container, the skirt extension having a pilfer proof security portion which, on application to the container neck enters over a security band portion on the neck of the container without rupture.

대표청구항 ▼

CM,1. A pilfer proof closure for a container having an upstanding neck defining a dispensing opening with a security band portion on the external neck surface thereof, said closure comprising a crown portion adapted to overlay and close said dispensing opening and a skirt depending from the peripher

CM,1. A pilfer proof closure for a container having an upstanding neck defining a dispensing opening with a security band portion on the external neck surface thereof, said closure comprising a crown portion adapted to overlay and close said dispensing opening and a skirt depending from the periphery of the crown portion, and including on the internal surface of the skirt, retaining means adapted to cooperate with corresponding retaining means on the container neck, said closure being characterized by the combination of a flexible annular sealing ring depending from the internal surface of the closure inclined inwardly towards the axis thereof, the sealing ring being adapted to engage in sealing relationship with the container neck and a support ring depending from the crown portion and disposed substantially concentrically within the sealing ring to limit flexing of the ring on application of the closure to a container neck, and a skirt extension integrally connected with said skirt through a peripheral weakened skirt portion, said extension being separable from said skirt at said weakened portion and including a resilient pilfer proof security portion including a plurality of tongue elements each hingedly connected with the skirt extension and adapted to extend inwardly thereof to engage the security band portion on the container neck, whereby said security portion on application of the closure to the container neck with relatively low torque enters over the security band portion without rupturing said weakened skirt portion.