TODAY’S PATENT- TAMPER INDICATING PACKAGES
Today’s patent was invented by Thomas M. McDevitt on July 23, 1985, bearing patent no. US4530438A.
The present invention relates to tamper indicating packages. It indicates a container having a neck with external threads formed thereon, and a plastic closure comprising a top panel and an integral depending annular skirt. The skirt has integral internal threads thereon complementary to the threads on the neck of the container.
The container has an annular bead positioned axially below the threads. The skirt has a temper indicating ring at the lower end thereof connected to the remainder of the skirt along a weakened line below the threads when the closure is on the inside surface thereof that when the closure is threaded on the container, The lug falls into the notch and engages the underside of the annular bead. When the closure is rotated to unthread the closure, the lug is cammed downwardly under the bead and at least a portion of the band is served from the remainder of the closure.