Container and container closure combined structure

Claim 1

The combination of a container having an extending, hollow neck and a container closure having a cap and a closure member at least one of which is formed of a material capable of temporary deformation, said cap including a dependent skirt located concentrically with said neck, said cap having an opening extending therethrough, said closure member being a spout and being mounted on said cap so as to be capable of being moved between opened and closed positions, said opening being closed off when sAid closure member is in said closed position, and being opened when said closure member is in said open position, said neck and said skirt including interengaging mounting means securing said neck to said skirt against linear movement along said neck away from said container, said mounting means permitting said closure to be assembled on said neck through temporary internal deformation and to be rotated on said neck, in which the improvement comprises: cooperating interlocking means on said cap and said container which fit within one another as said cap is moved in the direction of the vertical axis of said neck for preventing any rotary movement of said skirt relative to said neck, said interlocking means serving to maintain said cap in one orientation with respect to said container so that said spout will be located on said cap in one orientation with respect to said container.