Patent ID: 7618208

Claim:
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.