Child resistant cap and safety collar ring

A container and closure device therefor, which comprises:

• (a) a container having a neck, an open top and a horizontal retainer track thereon, adapted to receive and rotatably affix a collar ring thereto;
• (b) a collar ring having a circular inside wall with a horizontal track thereon for attachment to the track of said container so as to connect said collar ring to said container so as to be horizontally and freely rotatable thereabout, said collar ring also having a top with a ledge thereon for frictionally engaging and retaining a cap, said ledge forming a horizontal track thereon for rotation of at least one protrusion of a cap to be rotated therein when said frictional engagement is overcome, and said ledge having at least one cut out on said ledge to permit a cap to be inserted and removed from said collar ring;
• and,
• (c) a snap on cap having semi-flexible walls and having at least one protrusion which corresponds to and has a geometry of adequate size to freely move through said at least one cut out of said ledge of said collar ring and to be rotatable within said track of said collar ring when said frictional engagement is overcome, and such that when said cap is inserted and rotated, said at least one protrusion also being of adequate size and geometry to cause frictional engagement and to cause simultaneous rotation of said cap and said collar ring and to prevent removal of said cap from said collar ring, except when said cap and said collar ring are held separately and are rotated relative to one another such that said at least one protrusion and said at least one cut out are in alignment for lift up removal of said cap from said collar ring.