Dispenser pumps

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 83/76 (2006.01) B67D 7/60 (2010.01) B05B 11/00 (2006.01)

Patent

CA 2462187

A pump dispenser suitable for dispensing toothpaste in which a pump chamber (4) has a resiliently flexible flap outlet valve (64) leading into a discharge passage (61, 62, 63) leading to a discharge nozzle (151). The discharge nozzle (151) features a closure valve (16) in the form of a concave wall (162) with radial slits (165) which opens only under appreciable forward pressure. When released, the closure valve (16) closes and retracts forcibly, giving a clean cut-off of product and a degree of backflow via the large outlet valve area of the flap valve (64) as it closes.

Distributeur à pompe convenant pour distribuer de la pâte dentifrice, dans lequel une chambre de pompe (4) comporte une valve de décharge (64) à clapet élastiquement flexible qui débouche sur un passage de décharge (61, 62, 63), lequel débouche sur une buse de décharge (151). La buse de décharge (151) comporte une valve de fermeture (16) sous forme de paroi concave (162) à fentes radiales (165), qui ne s'ouvre que sous l'action d'une pression importante vers l'avant. Un relâchement de cette pression provoque la fermeture de la valve de fermeture (16) et un retrait forcé de celle-ci, produisant une coupure nette du produit ainsi qu'un certain refoulement de celui-ci par l'intermédiaire de la grande zone de refoulement de la valve de décharge (64) à clapet, à mesure que cette dernière se ferme.

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