| 摘要 |
A safety closure device for threaded neck bottles which can not be opened by young children because to open it, it is necessary to simultaneously press and turn the closure cap. The closure cap is made of two parts housed the one within the other, the outer one comprising a guarantie ring and ratching formations cooperating with ratching formations of the inner part. Driving members provided on said outer and inner parts coopering together only when these two parts are displaced relatively against a spring means.
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