| 摘要 |
A closure a container, including capability for counting and indicating the number of times the closure has undergone a cycle of closing and opening the container, and further for incorporating the closure into a device for for resisting the opening of the container by a child. In a preferred embodiment, the closure includes an outer cover having an indicator symbol window an indicator symbol carrier rotatably mounted in the outer cover with indicator symbols visible through the indicator window, a tooth and pawl for allowing one-way rotation of the outer cover relative to the indicator symbol carrier to allow the advancement of the window and an audible click as the pawl passes over a tooth to confirm proper advancement, lost motion mechanism for positively assuring the advancement of the window by one and only one indicator symbol upon each cycle, and a closure mechanism requiring the application of an axial force urging the closure toward the container while applying a rotational force to disengage the closure from the container.
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