| 摘要 |
The closure is made to require a certain manipulation to remove the closure from a container and, hopefully, this manipulation is beyond the skill of a child. The closure comprises an inner metal cap and an outer plastic cap. A one-way engagement means between the metal cap and plastic cap permits the closure to be placed upon the bottle, but prevents removal of the closure from the container. An interlock structure requiring the downward movement of the plastic cap relative to the metal cap for engagement is used for removal of the closure from the container. The resiliency of the dome of the plastic cap keeps the interlock structure normally out of engagement.
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