Patent ID: 6866167

Claim:
A device for metering liquid or gel products from a product reservoir, comprising: an axially mobile dispenser head comprising an outlet duct; and a metering chamber defined on the one hand by an inlet valve and on the other hand by a piston having a piston-rod connected to the head and having an outlet valve, the piston-rod being extended inside the chamber by a lower projecting end ensuring sealed locking of the inlet valve when the head is in a lower position, the chamber being formed in a cylindroconical socket having an upper flange for attachment to a rim of the reservoir, wherein the dispenser head comprises an outer lateral skirt provided with a first catch capable of cooperating by latching with a second, lower catch formed on the flange for catching the head in the lower position and capable of cooperating with a second, upper catch for holding the head in an upper position, and preventing separation, and wherein the device is free of a dispenser head displacement return means.