A fluid dispenser

B - Operations – Transporting – 05 – B

Patent

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Details

B05B 11/00 (2006.01)

Patent

CA 2554914

A fluid dispenser (1) for dispensing a metered volume of a fluid product (2) having a storage chamber (57) for storing the fluid product in; a dispensing outlet (27) through which the fluid product is dispensable from the dispenser; a metering chamber (73) which is adapted to provide the metered volume of the fluid product for dispensing through the dispensing outlet by movement of the metering chamber between a contracted state and an expanded state, movement of the metering chamber from the contracted state to the expanded state placing the metering and storage chambers in fluid communication to enable the metering chamber to receive from the storage chamber an excess volume of the fluid product comprising the metered volume and a surplus volume; and a bleed arrangement (55a, 55b) adapted to bleed the surplus volume of the fluid product from the metering chamber. The metering chamber is defined by a boundary wall having a first section (43) which is movably mounted in the dispenser to move the metering chamber between the expanded and contracted states. At least one transfer port (55a, 55b) is formed in the first section of the metering chamber boundary wall through which the fluid product is transferable from the storage chamber to the metering chamber when the metering chamber moves to the expanded state.

L'invention porte sur un distributeur de doses mesurées de produits fluides (1) comprenant: une chambre de stockage remplie (57) d'un produit fluide; un orifice de distribution (27) du produit fluide; une chambre de dosage (73) fournissant à l'orifice de distribution une quantité mesurée de produit fluide, en passant d'un état contracté à un état déployé, le passage de l'état contracté à l'état déployé plaçant la chambre de stockage et la chambre de dosage en communication pour permettre à la chambre de dosage de recevoir de la chambre de stockage un volume de produit fluide comprenant le volume mesuré plus un volume excédentaire; et un dispositif de purge (55a, 55b) du volume excédentaire. La chambre de dosage est délimitée par une cloison de séparation dont une première section (43), mobile dans le distributeur, dont le mouvement place la chambre de dosage soit à l'état contracté, soit à l'état déployé. Le distributeur comporte par ailleurs un port de transfert (55a, 55b) placé sur la première partie de la cloison de séparation que traverse produit fluide pour passer de la chambre de stockage à la chambre de dosage lorsque cette dernière passe à l'état déployé.

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