PILFERPROOF CLOSURE WITH MECHANICAL INTERLOCK

摘要

A closure for a container having a lever-openable plug wherein the lever is attached to other parts of the closure by a frangible member which must be broken to permit actuation of the lever to open the plug, 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 comprising a post on the plug extending into a socket on the frangible member and interlocked therewith.