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US 2026/0217431 A1Published application
Container closure overcap
AssigneeGreif International Holding BV
InventorsDale Taylor, Pedro De Oliveira
Life of this patent
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AssigneeGreif International Holding BV
InventorsDale Taylor, Pedro De Oliveira
Estimating the term…
A molded plastics overcap (10) for a container closure comprises a top wall (12), a generally annular side wall (14) depending from the top wall, and a retention skirt (16) foldably attached to a rim of the side wall. The retention skirt is foldable between a first position in which it extends from the side wall away from the top wall, to an operative position in which it extends within the side wall towards the top wall. The retention skirt comprises a retention boss (20) which, when the retention skirt is in the operative position, extends radially inward and provides an engagement surface facing the top wall so as to be engageable beneath a closure flange retaining curl to retain the overcap thereon. An outer ring (42) is attached to side wall by frangible bridges (36) and is permanently connected to the top wall by a bridging piece (44). A gap (38) or line of weakness in the side wall surrounds the bridging piece at its sides and bottom to isolate the bridging piece from the remainder of the side wall and the retention skirt. The gap or line of weakness is contiguous with and merges into lines of weakness (38c1, 38d′) which define edges of a tear-out portion of the overcap top wall.
A molded plastics overcap for a container closure, the overcap comprising a top wall, a generally annular side wall depending from the top wall, and a retention skirt foldably attached to a rim of the side wall, whereby the retention skirt is foldable between a first position in which it extends from the side wall away from the top wall, to an operative position in which it extends within the side wall towards the top wall;
An overcap as claimed in any preceding claim, wherein the gap or line of weakness in the side wall extends into the retention skirt.
An overcap as claimed in any preceding claim, wherein when the retention skirt is in the operative position, the engagement surface is not angled away from the top wall in the radially inward direction.
An overcap as claimed in any preceding claim, wherein the engagement surface comprises a hooked profile whereby in the operative position of the retention skirt, a radially inner portion of the engagement surface is closer to the overcap top wall than a radially outer portion thereof.
An overcap as claimed in any preceding claim, wherein the retention skirt further comprises a locking projection which projects towards the top wall radially outward of the engagement surface when the retention skirt is in the operative position within the side wall.
An overcap as claimed in any preceding claim, wherein the retention boss when the retention skirt is in its first position comprises an inwardly-facing surface which tapers relatively gently inward in the direction away from the overcap top wall, is substantially cylindrical, and/or which flares outward in the direction away from the overcap top wall.
An overcap as claimed in any preceding claim, wherein the retention boss when the retention skirt is in its first position comprises a generally frustoconical internal surface sloping inward in the direction away from the overcap top wall at an angle to a central axis of the overcap of less than 45 degrees.
An overcap as claimed in any preceding claim, wherein the retention boss when the retention skirt is in its first position comprises a generally frustoconical inwardly-facing surface sloping inward in the direction away from the overcap top wall at an angle to a central axis of the overcap of 20-25 degrees, optionally about 23 degrees.
An overcap as claimed in any preceding claim, wherein when the retention skirt is in the operative position, the retention boss comprises an inwardly-facing surface which tapers gently outward in the direction away from the overcap top wall.
An overcap as claimed in any preceding claim, wherein when the retention skirt is in the operative position, the retention boss comprises a generally frustoconical inwardly-facing surface sloping outward away from the overcap top wall at an angle to the central axis of the overcap of less than 30 degrees.
An overcap as claimed in any preceding claim, wherein when the retention skirt is in the operative position, the retention boss comprises a generally frustoconical inwardly-facing surface sloping outward away from the overcap top wall at an angle to the central axis of the overcap of 20-25 degrees, optionally about 20 degrees.
An overcap as claimed in any preceding claim, wherein the outer ring is configured such that it is positionable closely adjacent to a surface of the container when the overcap is seated on the container closure.
Dependencies are inferred from the claim text.