Moisture-tight safety closure and container

Abstract

A moisture-tight safety closure and a container wherein a depending flexible, circumferentially extending sealing lip on the closure engages a radius finish on the neck of the container. A plurality of circumferentially extending lugs on the closure cooperate with a plurality of circumferentially spaced hooks on the container neck for releasably securing the closure to the container.

1 . A moisture-tight safety closure and container comprising a cap having a top wall, a cylindrical skirt portion depending from said top wall, a circumferentially extending, tapered, flexible sealing lip depending from the top wall of said cap, said sealing lip being spaced radially inwardly from the skirt; a neck on said container, an annular upper end portion on said neck having a radially outwardly extending convex surface to thereby form a radius finish on the container neck, and means for releasably securing the cap to the container neck whereby the sealing lip engages the radius finish to thereby provide a moisture-tight closure.  
   
   
       2 . A moisture-tight safety closure and container, according to  claim 1 , wherein the means for releasably securing the cap to the container neck comprises a plurality of circumferentially spaced, radially inwardly extending lugs on the cap skirt portion, and a plurality of circumferentially spaced trackways and hooks on the container neck below the radius finish.  
   
   
       3 . A moisture-tight safety closure and container, according to  claim 2 , wherein each hook element has a downwardly tapered forward cam surface, an inclined back surface and a downwardly facing notched recess communicating with said forward cam surface, said hook elements being spaced apart a predetermined distance, whereby the cam surface of each hook element is spaced from the inclined back surface of an adjacent hook element to thereby provide said trackway between adjacent hook elements, said lugs being positioned in a respective trackway below a plane through the tip of the forward cam surface when the sealing lip lightly engages the radius finish on the neck of the container, whereby the cap only has to be rotated to engage the lugs into the notched recesses to secure the cap to the container.