Abstract: 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.

Abstract: An improved housing for a roll-on has an inward end, an outward end and a side-wall having an interior surface extending from the inward to the outward ends, the outward end defining an aperture sufficiently narrow to retain the roller and permit a segment of the roller to extend outside the housing, and a spider mounted laterally within the housing on the interior surface of the side-wall at or adjacent to the inward end which spider is resiliently biased towards the roller and has a means for providing localised contact with the roller and providing a parallel spacing between the spider and roller. Especially desirably, the roller is a spherical ball.

Abstract: In cosmetic dispensers for fluids, such as for example deodorants or antiperspirants comprising a bottle, a flow regulator in a housing mounted on the bottle and a cap rotatably mounted on the bottle or particularly onto the flow regulator housing, there is a risk that the housing can part from the bottle or be moved out of alignment by fitting or removal of the cap. This problem can be ameliorated or eliminated by employing a plurality of sets of anti-rotation elements at or adjacent to the mouth of the bottle around its periphery, each set comprising a peg and a socket. Preferably, the housing is bifurcated inward of the flow regulator, one wall extending within the bottle and the other wall extending out side the wall, and desirably the bottle wall is of reduced wall thickness in the overlap so that the exterior of the bottle surface and housing surface can be flush at their line of contact.

Abstract: Doses of cosmetic fluid dispensed from a roll-on dispenser can fluctuate significantly between successive applications. This problem can be alleviated by perturbing flow within the roll-on housing, such as air flow, by forming flow perturbators on the interior side-wall of the housing. These perturbators can alternatively or additionally comprise lateral beads or notching an interior sealing ring. The dispenser housing preferably also includes a spider normally located between the roller and the bottle interior, and preferably a resilient spider having an facing surface parallel with the roller that can control the depth of liquid film adhering to the roller, which when the roller is a ball means a concave upper face of similar radius of curvature to that of the ball.