B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
206/31
B65D 41/34 (2006.01) B65D 55/08 (2006.01)
Patent
CA 1286631
16102 TAMPER INDICATING PACKAGE Abstract of the Disclosure A tamper indicating package including a container having a neck with an external thread and an annular retaining bead below the thread and a plastic closure comprising a base wall, a peripheral skirt and a tamper indicating band connected to the free edge of the peripheral skirt by integral bridges. The tamper indicating band includes an integral portion that extend below the annular bead on the container such that when the closure is unthreaded, the bridges are broken. The band includes integral circumferentially spaced supports that extend axially toward the free edge of the peripheral skirt and the bridges extend from the supports to the free edge. Each bridge includes a generally axial leading edge and a generally axial trailing edge. The upper edge of leading edge in the direction of unthreading intersects the lower edge of the skirt at a sharp corner to define a stress concentration point at the edge of the skirt. The lower edge of the leading edge of each bridge intersects the band along a radius. The trailing edge intersects the lower edge of the skirt and the upper edge of the band along radii. As a result when the closure is rotated to unthread it from the container, the bridges break at the stress concentration points at the edge of the skirt of the closure.
533319
Gowling Lafleur Henderson Llp
Owens-Illinois Inc.
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