Cosmetic dispenser housing and method

A - Human Necessities – 45 – D

Patent

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Details

A45D 34/04 (2006.01)

Patent

CA 2573390

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 (3), such as air flow, by forming flow perturbators on the interior side-wall (11) of the housing (3). These perturbators can alternatively or additionally comprise lateral beads (20) or notching an interior sealing ring (17). The dispenser housing (3) preferably also includes a spider (4) normally located between the roller and the bottle interior, and preferably a resilient spider (4) 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.

Les doses de fluide cosmétique distribuées par un distributeur à bille peuvent fluctuer sensiblement entre les applications successives. Ce problème peut être atténué par la modification du flux à l'intérieur du logement à bille (3), tel que le flux d'air, par la formation de modificateurs de flux sur la paroi latérale intérieure (11) du logement (3). Ces modificateurs peuvent comprendre, en outre ou dans une autre de réalisation, des bourrelets radiaux (20) ou des encoches sur un anneau d'étanchéité intérieur (17). Le logement de distributeur (3) comporte également de préférence une araignée (4) située normalement entre le rouleau et l'intérieur de la bouteille, et de préférence une araignée élastique (4) dont une surface de face est parallèle au rouleau, pouvant moduler la profondeur du film collant au rouleau, qui lorsque le rouleau est une bille forme une surface supérieure concave possédant un rayon de courbure similaire à celui de la bille.

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