Impregnable locking system

摘要: Impregnable locking system of the fastening display-boxes called "blisters", consisting in a box two articulated halves having on side opposite their hinge flaps destined to be held one against other by this system, characterized that it consists clip cover these flaps, and between which is attached transversal shaft, vertical notch made allowing shaft go through when put into place, gears being slid onto outer each flap corresponding clip, means provided so are constantly pushed towards other, once placed come rest lodgings sides therefore immobilizing external push direction take them out allow extraction free blister its opening.