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Conventional dispensers for a cosmetic fluid, such as a liquid, comprises a bottle having a housing for a low regulator, such as a roller or preferably a ball and a cap which is securable to the bottle by a single set of co-operating screw threads. An improved dispenser secures the cap to the bottle

Conventional dispensers for a cosmetic fluid, such as a liquid, comprises a bottle having a housing for a low regulator, such as a roller or preferably a ball and a cap which is securable to the bottle by a single set of co-operating screw threads. An improved dispenser secures the cap to the bottle, and especially to the housing, by a plurality of sets of mounting elements, one of which comprises a cam providing axial movement of the cap when it is rotated around the bottle and the other a follower, such a lug and bayonet. One element is mounted on the interior of the cap and the other on the exterior of the bottle/housing. The mounting elements on the bottle/housing advantageously are separated both laterally around the periphery and axially so as to permit the mounting elements on the cap to pass axially between adjacent bottle elements and the cap to be rotated until matched sets of elements are brought into contact. The bottle can comprise separate moldings for the housing and the reservoir which are in fluid tight fitting, the moldings preferably having anti-rotational means such as an axial-extending lug on one molding that can be slid into an axial slot channel or socket on the other molding.

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The invention claimed is: 1. A dispenser for a cosmetic fluid comprising a bottle, a cap and a mounting means to enable the cap to be removably mounted on the bottle, said bottle having a first end, and an interior at least partially defined by a reservoir, said first end having an exterior and com

The invention claimed is: 1. A dispenser for a cosmetic fluid comprising a bottle, a cap and a mounting means to enable the cap to be removably mounted on the bottle, said bottle having a first end, and an interior at least partially defined by a reservoir, said first end having an exterior and comprising a housing for a flow regulator that, alone or together with said housing defines a passageway for the fluid from the interior out of the bottle, said cap having a side-wall having an interior surface dimensioned to fit over said bottle first end, and said mounting means comprising a first mounting element and a second mounting element, one element located on the interior surface of the cap being engagable with the other element located on the exterior surface of the bottle by relative rotation of the cap and the bottle about a common axis characterised in that the mounting means comprise a plurality of matched sets of the first element and the second element, in each set the first mounting element comprises a cam surface generating axial movement of cap relative to bottle and the second mounting element comprises a follower, neighbouring first elements having sufficient circumferential lateral separation to allow axial movement of the second element between them and sufficient axial separation to allow rotation of the cap until the first element encounters the second element of the matched set, wherein the first element of each matched set of mounting means is positioned to engage only with the second element with which it is matched and wherein the cap and the bottle have an asymmetric feature. 2. A cosmetic fluid dispenser according to claim 1 in which each second mounting element is positioned symmetrically around the bottle. 3. A cosmetic fluid dispenser according to claim 1 in which three sets of first and second mounting elements are employed. 4. A cosmetic fluid dispenser according to claim 1 in which one mounting element comprises a lug providing the cam surface and the other mounting element comprises a bayonet. 5. A cosmetic fluid dispenser according to claim 4 in which the cam surface of the lug leads to a bayonet-retaining recess. 6. A cosmetic fluid dispenser according to claim 4 in which the fluid flow regulator comprises a roller or ball and the cap exerts an axial force of from 15 to 30 inch pounds on the ball or roller when the bayonet is retained in the recess in the lug. 7. A cosmetic fluid dispenser according to claim 1 in which at least one mounting element has a trailing edge formed into a stop which prevents over-rotation of the cap. 8. A cosmetic fluid dispenser according to claim 1 in which the second mounting element comprises the cam surface. 9. A cosmetic fluid dispenser according to claim 1 in which the second mounting element is located on the exterior of the bottle at or adjacent to the housing. 10. A cosmetic fluid dispenser according to claim 1 in which the cap has a planar exterior or rim permitting the dispenser to stand stably in an invert orientation. 11. A cosmetic fluid dispenser according to claim 1 in which the bottle has a non-flat second end which prevents the dispenser from standing stably in an upright orientation without support. 12. A cosmetic fluid dispenser according to claim 1 in which the fluid flow regulator comprises a roller or ball, and the cap has a wall depending into its interior from its top wall which contacts the roller or ball when the cap is fitted and urges it against the interior of the housing. 13. A cosmetic fluid dispenser according to claim 1 in which the cap side wall comprises an asymmetric feature. 14. A cosmetic fluid dispenser according to claim 1 in which the bottle comprises a reservoir integrally moulded with the housing. 15. A cosmetic fluid dispenser according to claim 1 in which the bottle comprises a housing and a reservoir that are separate mouldings, the housing being mounted on the reservoir. 16. A cosmetic fluid dispenser according to claim 15 in which the housing and reservoir together provide at least one anti-rotation means preventing the housing from rotating relative to the reservoir. 17. A cosmetic fluid dispenser according to claim 16 characterised in that the anti-rotation means comprises an axially-extending lug mounted on a contact surface of one moulding that can be slit into a slot, channel or socket formed in a contact surface of the other moulding. 18. A cosmetic fluid dispenser according to claim 17 characterised in that the lug is mounted on the housing and the slot, channel or socket is formed in the side-wall of the reservoir. 19. A cosmetic fluid dispenser according to claim 17 employing the channel. 20. A cosmetic fluid dispenser according to claim 16 in which the second element for mounting the cap on the bottle is axially aligned with the axially-extending lug. 21. A cosmetic fluid dispenser according to claim 20 in which the second element comprises a lug providing the cam means and the axially-extending lug are both mounted on the housing. 22. A cosmetic fluid dispenser according to claim 16 employing the same number of anti-rotation means as sets of cap-mounting elements. 23. A cosmetic fluid according to claim 15 in which the housing comprises an orientation marker. 24. A cosmetic fluid dispenser according to claim 1 in which the flow regulator is a rotatable ball. 25. A cosmetic fluid dispenser according to claim 24 in which the ball is spherical. 26. A cosmetic fluid dispenser according to claim 1 containing a liquid as the fluid. 27. A cosmetic fluid dispenser according to claim 1 containing an antiperspirant or deodorant composition. 28. A cosmetic dispenser comprising a bottle and a cap removably mountable on the bottle, the bottle being formed by mounting a separately moulded housing for a ball or roller on a separately moulded reservoir, the reservoir having a closed end integral with a side-wall having a neck section defining an aperture, and the housing having an outward end, an inward end and a side-wall extending between the outward and inward ends, said side-wall defining a chamber within which the ball or roller is rotatably retained and having a lower section fitting outside and/or within the neck section of the reservoir, in which the cap is mountable on the housing by a plurality of laterally arranged sets of mounting elements, each set comprising a first mounting element located on the interior surface of the cap that is engagable with a second mounting element located on the exterior surface of the housing by relative rotation of the cap and the housing about a common axis, one of said elements comprising a cam surface generating axial movement of cap relative to housing and the other of said elements comprising a follower, wherein the first element of each matched set of mounting means is positioned to engage only with the second element with which it is matched, and wherein the cap and the bottle have an asymmetric feature. 29. A cosmetic dispenser for a fluid comprising a bottle, a cap and a mounting means to enable the cap to be removably mounted on the bottle, said bottle having a first end, an opposed second end which is profiled to prevent it standing stably in an upright orientation, a side-wall extending from said first end to said second end having an exterior surface, and together with the second end defining an interior, said first end comprising a housing for a flow regulator, said flow regulator alone or together with said housing defining a passageway for the fluid from the interior of the bottle to its exterior when the cap is removed, said cap having a mouth, a top wall, and a side-wall having an interior surface extending from the mouth to the top wall dimensioned to fit over said bottle first end, said top wall having a planar exterior surface or rim permitting the dispenser to stand stably in an invert orientation, and said mounting means comprising a plurality of sets laterally arranged of a first mounting element located on the interior surface of the cap that is engagable with a second mounting element located on the exterior surface of the bottle by relative rotation of the cap and the bottle about a common axis, in each set the first or second mounting element comprising a cam surface generating axial movement of cap relative to bottle and the other mounting element comprising a follower, wherein the first element of each matched set of mounting means is positioned to engage only with the second element with which it is matched, and wherein the cap and the bottle have an asymmetric feature.