Pilferproof closure with mechanical interlock.

摘要

A closure for a container having a lever-openable plug (28) wherein the lever (32) is attached to other parts of the closure by a frangible member (150) which must be broken to permit actuation of the lever (32) to open the plug (28), thus indicating to a subsequent observer that either the closure had been open or an attempt had been made to do so. The attachment of said frangible member (150) may comprise a post (152) an the plug (28) extending into a socket on the frangible member (150) and interlocked therwith.