Child-resistant closure device for a container having a tapered neck portion
AssigneeGraham Packaging Company, L.P.
InventorsSheldon Yourist, Brian Hagan, Ben Lewis, Anthony Schlies
Life of this patent
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Abstract
A child-resistant closure device for a rigid plastic container having a tapered neck section and method of manufacture. The device has a substantially circular neck and inner lid surface. The neck includes anchors which engage with nodes on the inner lid surface. The tapered section of the neck acts as a spring engaging the nodes with the anchors. The closure device may be engaged by rotating the lid in relation to the neck. To disengage the closure device a simultaneous downward and rotational force must be applied. The lid and the container, including the closure, can be blow molded at the same time or separately.
Claims20
A closure system for a rigid plastic container, the closure system comprising:
- a lid having a sidewall defining an inner surface, the inner surface including at least two nodes a distance apart that extend radially inward,
- a neck, defining an opening, the neck including:
- a first end and a second end, wherein the first end is closer to the container than the second end,
- at least two anchors located a distance apart and extending radially outward from an outer surface of the neck, the anchors having (i) a first anchor part comprising an undercut, and (i) a second anchor part comprising a stop, the second anchor part adjacent to the first anchor part, wherein the anchors are located further from the first end than the beginning of a tapered section and are adapted to contact the tapered section when the lid is positioned with the nodes below the undercut, and
- the tapered section beginning at the first end, tapering towards the second end, wherein the tapered section is adapted to act as a spring and provides a bias force upon the nodes in a direction away from the container and towards the undercuts when the lid is positioned with the nodes below the undercuts.
Dependencies are inferred from the claim text.