| 摘要 |
<p>Child proof screw closure includes a screw cap and an outer cap from an elastic material covering the screw cap. The outer cap has on its inner surface projections which when deformed by an outer radial and inwards directed pressure are brought in contact with projections on outer side of the screw cap. Between the screw cap (1) and the outer cap (8) is coaxially positioned an elastic locking ring (5) which has on its outer and inner side radial projections (6, 7, 7a). Positioned in front of the radial projections (7, 7a) on the outer side of the locking ring (5) are hump shaped projections (11, 11a) for the projections (9) on the inner surface of the outer cap (8). The radial projections (6, 7) of the locking ring (5) are circumferentially staggered.</p> |
