Patent ID: 8794490

Claim:
A liquid dispensing device, comprising: a pressing element, a sealing component which is moveable with respect to the pressing element between a liquid release position and a liquid blocking position, wherein in the liquid blocking position, the sealing component cooperates with the pressing element, an outer envelope, fixed in position with respect to the pressing element, comprising an inner opened projection, extending proximally from the outer envelope, and covering the sealing component, this envelope comprising a liquid release orifice, the sealing component comprising a distal end projecting from a liquid release orifice, the inner opened projection encircling a part of the distal end of the sealing component so as to ensure a guiding of the distal end of the sealing component during the movement between the liquid release and the blocking position, the outer envelope comprising a bearing seat for a return element holding the sealing component in blocking position, the seat being arranged around the inner opened projection, the device also comprising a removable cap and an immobilizer retaining the sealing component in its blocking position, configured to prevent the sealing component from taking up its liquid release position, the immobilizer being supported by the cap, exerting a pressure on the sealing component and being activated when the cap is fitted on the device, the device also comprising a vent allowing air to enter into a reservoir, and the cap comprising, in addition to the immobilizer for the sealing component, an airtight seal, preventing air from passing through the vent when the cap is fitted on the device.