Patent ID: 8051999

Claim:
A closure construction, comprising: a container having a bottom closed end with a neck defining a top open end; male threading disposed on the neck and about the top open end; a pair of locking notches residing in the neck on opposing sides of the top open end; a cap removably connected to the neck of the container; the cap including an outer shell with top wall, an outer wall, having an inner surface, and an open bottom end; a pair of arcuate walls, each having a concave surface and connected to and downwardly depending from the top wall of the cap in spaced apart relation from each other defining a gap therebetween; partial threading disposed on each of the concave surfaces of the arcuate walls to, in cooperation with each other, provide a threaded connection between the cap and the male threading disposed on the neck of the container thereby releasably securing the cap to the container; a pair of protrusions connected to and emanating inwardly from the inner surface of the outer wall; the pair of protrusions residing along a line running through the gap between the pair of arcuate walls and being releasably respectively seated in the pair of locking notches when the cap is threaded past a predetermined point onto the neck of the container to threadably lock the cap to the container.