| 摘要 |
A resilient plastic screw-type closure, for use with standard container tops, having a plurality of indicating members (9) as a detachable lower rim. Initially, the indicating members (9) are outside the principal external contours of the closure, but after installation on the container they are tilted inward until retained by locking means (19,20) within the principal contours. In that condition they (9) are positioned underneath an annular shoulder (8) formed around the neck of the container. Thereafter, the closure cannot be removed or substantially loosened without partially or wholly detaching the indicating members (9) from the body of the closure. |
