| 主权项 |
1. Method for extracting liquid from a liquid dispenser (10) which comprises:
a liquid container (12), a liquid dispensing device (14) which is able to take up liquid from the container and convey it along a path as far as at least one liquid outlet (54a; 72a; 82a) of the device so as to dispense the taken-up liquid to outside the dispenser, the dispenser comprising at least one compensating-air inlet (40) for letting air into the container and which, when open, by letting a volume of air in from outside makes it possible to compensate for a volume of liquid taken up by the device (14), the device (14) comprising a pumping device (20) for pumping the liquid contained in the container, said pumping device being able to occupy a rest position and, under the action of an actuating command, one or more actuated positions in which or in each of which said at least one compensating-air inlet is open to the outside, wherein the method comprises a step of injecting a volume of extraction gas under pressure into the container through said at least one compensating-air inlet open to the outside when the pumping device is in an actuated position, so as to apply pressure to the liquid contained in the container in order to cause it to flow along the liquid-conveying path and thus extract a predetermined quantity of liquid from the dispenser. |
