Liquid dispenser
AssigneeAptar Radolfzell GmbH
InventorHubertus Pfeffer
Life of this patent
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Abstract
A droplet dispenser for dispensing cosmetic or pharmaceutical liquids in the form of individual droplets, having a medium reservoir with a first and second medium chambers, which are isolated from one another for separately storing two media. The medium chambers are connectable to produce a combined liquid. The droplet dispenser has a discharging opening and, downstream of the discharging opening, a droplet forming contour in order to create droplets which detach from the droplet forming contour as soon as the droplets have reached a defined volume. The droplet dispenser has a pump device between the medium reservoir and the discharging opening, wherein the pump device has a variable-volume pump chamber for delivering combined liquid. The pump device has an inlet valve on the entry side and an outlet valve on the exit side.
Claims20
A droplet dispenser for dispensing cosmetic or pharmaceutical liquids in the form of individual droplets, the droplet dispenser comprising:
- a media reservoir with a first media chamber and a second media chamber, the first and second media chambers being isolated from one another for separately storing two media, the first and second media chambers being connectable to one another for producing a blended liquid;
- an outlet opening;
- a droplet-forming contour downstream of the outlet opening;
- and
- a pump device between the media reservoir and the outlet opening, the pump device having a volumetrically variable pump chamber for conveying blended liquid, the pump chamber having an inlet valve on an inlet side and an outlet valve on an outlet side;
- wherein the pump device is configured to convey an amount of liquid of at most 100 μl upon full actuation.
Dependencies are inferred from the claim text.