Bottle and closure having angular positioning means

Claim 1

In a bottle comprising: (a) a neck; (b) external thread means on said neck; (c) a detachable stoppering device; (d) internal thread means on said stoppering device cooperable with said external thread means of the neck of the bottle; (e) means effective to ensure the angular positioning of the stoppering device in relation to the bottle, the latter means comprising (i) stop means carried externally in the neck, above the thread means thereof, and (ii) protuberance means carried internally by the stoppering device, said protuberance means being positioned and dimensioned so that when the stoppering device has been completely screwed down the protuberance means abuts said stop means of the neck, wherein said stoppering device is constituted by a stoppering cap and by a presentation cap fitted on the stoppering cap and at least partly covering it, the said stoppering cap being constituted by a cylindrical skirt joined to the top of said stoppering cap, said skirt carrying said internal thread means cooperating with the corresponding external thread means of the neck; the improvement wherein said protuberance means is carried by the presentation cap and is in the form of a fin which is engaged in a slot in the wall of said cylindrical skirt near the periphery of said top thereof.