| 摘要 |
The screw cap comprises a top (1), a cylindrical skirt (2) having a helical thread (4) on its internal face, and a base extended by a security ring (6) connected to the skirt by divisible links (7). The security ring has a collar (8) connected to an inwards turned continuous stop band (11). The stop band is inclined in the direction of the top so as to be able to be engaged during mounting on the bottle neck (R) under a peripheral projection (S) on the neck. The collar checking band has a continuous upper end edge (5) defining a stop plane (P-P') orthogonal to the cap axis (x-x'). From place to place are zones (16) of small thickness defining several sectors (17). On each sector and on the internal face relative to the axis is a rib (20) with a stop (21) delimiting a polygonal passage whose inscribed circle is of diameter less than that of the larger neck. <IMAGE> |
