| 摘要 |
The invention discloses a cap with a safety opening which comprises an inner element (10) with a thread suited to be screwed on the neck of a bottle (40), presenting on its outer cylindrical surface cogs (13) matching the corresponding cogs (31) which are present on an outer element (30), an outer element (30), also essentially cylindrical, presenting a double row of cogs (31, 33), co-operating with the inner element (10) and with a push-button (20); a push-button (20) having an essentially cylindrical shape and being placed between the inner and the outer elements and presenting at its bottom an annular rim (24) with a double row of cogs (21, 25), one row being arranged on its cylindrical wall and the other on the vertical wall (26) of the annular rim (24). When the push-button (20) is pressed downwards and slightly rotated in the direction for untightening the cap, the cogs (21) of said push-button engage the corresponding cogs (15) belonging to the inner element (10) thereby maintaining the push-button integral with said inner element until the outer element (30) is rotated in the direction for tightening the cap. |
