Patent ID: 8783452

Claim:
A bottle with a threaded neck having a dispensing device for releasing a product inside said bottle, said dispensing device comprising: a) a cap having a1) a female screw screwed onto the threaded neck of said bottle; a2) a generally tubular element, coaxial with said female screw, having a lower end which projects inside the neck of the bottle, said lower end being closed by a bottom wall; a3) a collar joined to the top of said generally tubular element through a tear-away ring; b) a hollow piston inserted in said tubular element; b1) the hollow piston having an open lower end and a head suitable for being housed in said collar; b3) the hollow piston being suitable for breaking through said bottom wall of said cap after the tear-away ring is removed and the hollow piston is pushed linearly and downwardly without substantial rotational movement; b4) the hollow piston defining, together with said bottom wall of said generally-tubular element, a chamber containing a product intended to be released in said bottle; wherein the lower end of said hollow piston has a generally inclined profile with respect to the plane defined by said bottom wall; elements are provided which are suitable for stopping the stroke of said hollow piston before a complete detachment of the bottom wall occurs and for preventing said hollow piston from rotating at the end of its stroke.