Patent ID: 9433960
Filing Date: 2016-09-06
CPC Classification: B05B,B65D,G01F

Claim Text:
1. A dosing device for dispensing metered doses of liquid from a resiliently squeezable container, the dosing device comprising: a component having an outlet tube which defines a discharge opening, a control chamber, an obturator movable in the control chamber; the dosing device defining an outlet passage for liquid from the container leading past or around the control chamber to the discharge opening; the control chamber having one or more control openings to admit a restricted flow of liquid from the container interior into the control chamber; the obturator being movable in the control chamber and adapted to advance during dispensing, under the influence of liquid flowing into the control chamber through the one or more control openings, to a blocking position where it blocks the outlet passage to terminate a dose; and wherein the dosing device comprises an elastomeric valve constructed and arranged to prevent reverse flow in the outlet passage, the valve being adjacent a periphery of the control chamber and comprising a sealing lip resiliently biased towards a closed position against a corresponding opposed sealing region of said control chamber, said elastomeric valve including a front base web which is fitted around said outlet tube.