Reusable childproof closure

In a reusable childproof closure suitable to close the nozzle of a container of the type wherein the nozzle is defined from the container by a shoulder, the improvement which comprises

• the nozzle comprising a circular wall having an inside surface and an outside surface,
• a peripheral groove extending radially outwardly from the inside surface of the nozzle;
• and
• a cap in overfitting relationship to the nozzle, the cap comprising a top and a hollow, generally cylindrical, closure wall depending from the top,
• said closure having an inside surface and an outside surface, the outside surface being of dimension and configuration to slide within and cooperate with the inside surface of the nozzle circular wall,
• a peripheral lip extending radially outwardly from the outward surface of the cap closure wall,
• the configuration of the nozzle peripheral groove and the configuration of the cap peripheral lip being cooperating and complementing to form a lock therebetween when the cap is applied to the nozzle,
• the cap further comprising an outer, generally cylindrical skirt, the said skirt being connected to the said cap closure wall by a radial extension and being configured overfit substantially the entire nozzle,
• whereby the cap can be removed from the nozzle by applying upwardly directed forces at the bottom of the said skirt and sufficient magnitude to force the cap lip out of the nozzle groove.