child resistant packaging with dual activity and child resistant closure for such a packaging

摘要

A dual-action child-resistant package includes a container having a neck finish with an open mouth, at least one external thread segment, and at least one external lug spaced from the thread segment and having an angled cam surface facing axially toward the open mouth. A closure has a peripheral skirt, at least one internal thread segment for engagement with the external thread segment on the container neck finish, an internal angled cam surface on the skirt, at least one internal lug on the skirt for engagement with the external lug on the neck finish, and a flexible resilient spring for engaging the neck finish and biasing the closure away from the neck finish. The closure is threaded onto the neck finish until the internal lug on the skirt moves over the external lug on the neck finish to resist unthreading of the closure from the neck finish. The closure is removable from the neck finish by: (1) squeezing the skirt to ovalize the skirt such that the internal lug on the skirt moves radially outwardly from the external lug on the neck finish whereupon the closure can be unthreaded from the neck finish, and (2) pushing the closure over the neck finish against the spring until the cam surface on the external lug engages the internal angled cam surface on the skirt to ovalize the skirt until the internal lug on the skirt moves radially outwardly from the external lug on the neck finish whereupon the closure can be unthreaded from the neck finish.