| 摘要 |
Lockable screw cap, particularly for a bottle, made by injection over extractable dies, noteworthy by the fact that it comprises a bottom thread 1 with four thread starts at 90 DEG located at the level of its base, at least one internal wall or vertical tongue 3 descending from its top and having the shape of a clamp at its bottom end, adapted to engage at the end of screwing onto a protrusion 2 or tooth with which the upper plate P of the ring or flange of the bottle is provided, several internal radial fins 6 descending from its top concentric with the ring or flange of the bottle, and adapted to pre-centre this cap on the latter before screwing. <IMAGE>
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