A flat primary & secondary locking system

摘要

A secondary locking system for article carriers consisting of at least one secondary male lock (70A-C) with two shoulders that is attached by a neck to the edge of a outer flap (12) on the carrier for use with a primary locking system. An inner flap (26) has a secondary female opening (74A-C) for each secondary male lock. The secondary female opening is formed by a secondary cut line (76A-C) and fold line (84A-C) with the center of the fold line projecting towards the edge of the flap while of the center of the secondary cut line projects away from the edge of the flap to guide the secondary male lock into a flat position against the inside of the inner flap. The shoulders on the secondary male lock are engaged against locking ledges along the extensions of the secondary cut line. A pair of slits (86A-F) may be formed at the end of the fold lines that project inwardly to allow the secondary male lock to slide into a flat position. This locking system is especially useful in wrapping containers that have a flat bottom that would interfere with conventional locking systems.