Fragile opening means for a container lid
OwnerBrian L. C. Sutchinventor
Life of this patent
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Abstract
A tamper evident retainer to hold a closure and container in closed condition, the retainer having a displaceable extension flange carrying retaining means, in the initial condition of the retainer, before application of the closure to the container, the retainer having the extension flange and retaining means out of the path of relative movement of the closure and container during closing and being displaceable to position the retaining means in the path of relative movement of the closure and container during opening, the retainer having a weakened zone so that access can be had to the container by rupturing the weakened zone to release the retaining means and thereby allow the closure to be removed from the container.
Claims10
A retainer for retaining a closure and a container in closed condition, the retainer comprising a main flange which hingedly carries extension flange means which in turn carry retaining means, said extension flange means and retaining means having a predetermined attitude relative to one another, the retainer, in an initial condition before the closure is applied to the container, having the extension flange means and retaining means in a first position relative to the main flange where they are clear of the path of relative movement of the closure and container in application of the closure to the container, the extension flange means and retaining means, whilst remaining in their predetermined attitude relative to one another, being displaceable after application of the closure to the container, relative to the main flange to position the retaining means in the path of the relative movement of the closure and the container in a direction of removal of the closure from the container, and a zone of weakening in the retainer where a rupture can be effected to separate the extension flange from the container to allow separation of the closure and container.
A moulding including a main flange, extension flange means extending from the main flange and coupled thereto by a zone of weakening, a pull tongue being defined by a recess in that face of the extension flange directed away from the main flange and a projection on the extension flange means on the other face of that flange means, one end of the recess lying adjacent one end of the projection to offset that tongue end relative to the extension flange means and provide a weak connection between the tongue and the extension flange means, the other end of the recess being spaced from the corresponding end of the projection to provide an anchorage of the tongue to the extension flange means, the recess in the external surface of the extension flange means extending from a recess in the main flange which corresponds to the projection on the extension flange means to offset the edge of the tongue nearest the main flange relative to that flange, the tongue being displaceable relative to the extension flange and main flange to initiate rupture of the zone of weakening.
Dependencies are inferred from the claim text.