| 摘要 |
A child-resistant package consists of a container having an open-ended neck and a cap having a top and an annular skirt which telescopes over the container neck. There are co-operating snap-over retainers on the exterior of the neck and the interior of the cap skirt which require the cap to be moved axially a distance greater than the axial over-lap of the retainers in order to remove the cap. The container neck and the cap skirt also have a radially extending lug and a circumferentially extending ramp that are moved into engageable alignment by flexing the cap skirt inwardly. The ramp has a surface which is inclined relative to the axis of the neck and cap skirt and which has an axial height greater than the distance of axial over-lap of the retainers. In order to remove the cap, the skirt is flexed inwardly to align the lug with the ramp surface and the cap is rotated relative to the container neck causing the cap to be moved axially a distance sufficient to disengage the over-lapped retainers. A stop bar is formed near the beginning end of the ramp which is spaced circumferentially from the ramp a distance only slightly greater than the circumferential width of the lug so that the lug must be inserted into such space when the skirt is flexed inwardly in order to engage the lug with the ramp when the cap is rotated relative to the container for removing the cap. |
