Dispenser cap for fluid substance containers, has two component parts being shaped to prevent accidental separation of cap from container neck

摘要

The thread (5) on the head (1,2) and the axial length of the two tubular walls (4,9) from which the annular ribs project (14,15) are such that when the head is rotated in the direction for unscrewing it from the container neck (7), the thread on the head becomes released or freed from the thread on the neck (6) before the annular ribs mutually interfere to cause withdrawal of the second tubular wall of the body from the hole in the container neck on which the cap is mounted.