Abstract: A package having child-resistant and non-child-resistant modes of operation includes a plastic container having a cylindrical finish and at least one external thread on the finish spaced from the open end of the finish. An external circumferentially extending first engagement element is provided on the finish between the external thread and the open end of the finish, and has an outside diameter that is less than that of the external thread. A manually deflectable release element is externally cantilevered from the finish on a side of the thread remote from the open end. A plastic closure has a base wall and a peripheral skirt with at least one internal thread for engagement with the at least one external thread on the finish in a child-resistant mode of operation. There is at least one locking lug on the skirt for releasable engagement with the release element on the container in the child-resistant mode of operation. An annular wall extends from the base wall in a direction opposite from the skirt.

Abstract: A package that has both child-resistant and non-child-resistant modes of operation. A container has an end with an open mouth surrounded by a container wall with a central axis and at least one first lock element extending radially outwardly from the wall. A closure includes an annular base wall having inner and outer peripheral edges. A cylindrical skirt extends from the outer peripheral edge of the base wall, and at least one second lock element is disposed on the skirt. A projection extends axially from the inner peripheral edge of the base wall in a direction opposite from the skirt. The projection has an annular sidewall spaced radially inwardly from the outer peripheral edge of the skirt.

Abstract: A child-resistant closure and container package includes a container having an open end surrounded by a cylindrical wall with a central axis, a plurality of circumferentially spaced projections extending radially outwardly from an outer surface of the wall adjacent to the open end, notches on undersides of the projections, and a plurality of circumferentially spaced flexible resilient spring elements extending radially outwardly from the outer surface of the cylindrical wall and angularly disposed between the projections. A closure includes a base wall, a cylindrical skirt extending from the base wall to an axial edge spaced from the base wall, a plurality of circumferentially spaced lugs extending radially inwardly from the skirt, and a circumferentially continuous annular wall extending axially from the base wall coaxially with and spaced radially inwardly from the skirt.

Abstract: A package that has both child-resistant and non-child-resistant modes of operation. A container has an end with an open mouth surrounded by a container wall with a central axis and at least one first lock element extending radially outwardly from the wall. A closure includes an annular base wall having inner and outer peripheral edges. A cylindrical skirt extends from the outer peripheral edge of the base wall, and at least one second lock element is disposed on the skirt. A projection extends axially from the inner peripheral edge of the base wall in a direction opposite from the skirt. The projection has an annular sidewall spaced radially inwardly from the outer peripheral edge of the skirt.