PILFERPROOF CLOSURE AND CONTAINER ASSEMBLED WITH SUCH CLOSURE

摘要

Pilferproof closure and container assembled with such closure. A tamper-proof cap (35) and neck (12) assembly made of stretchable plastics material in which the neck (12) has portions (14, 21) fitted within and about a short metal neck portion (3) of a container (5) which serves as a rigidifying back up for the plastic neck and for a locking shoulder (13) on the neck (12) to provide a deflection resistant structure and thereby prevent a tamper-indicating ring (52) connected to the cap (35) from slipping off the shoulder (13) without tearing upon linitial unthreading of the cap (35). This rigidified structure also facilitates application of the tamper-indicating ring (52) during initial threading of the cap (35) onto the threaded neck (12) at which time the ring (52) is stretched over the shoulder (13) by a capper bead which engages force-transmitting posts (58) integral with the ring (52) for forcing the ring over the locking shoulder, the band (52) being stretched between the posts (58) and extending beneath the shoulder (13) as chordal segments.