Patent ID: 8491538

Claim:
A device for the administering of a fluid product, the device comprising: a housing; a delivery arrangement for delivering the product from a reservoir, wherein the delivery arrangement comprises a rotatable input member and a delivery element movable along a thrust axis in an advancing movement, which delivery element is driven by a rotation of the input member; a drive arrangement coupled to the input member; a rotatable dosing arrangement for setting a dose of the product, the rotatable dosing arrangement coupled to the drive arrangement; a display drum for displaying the set dose, the display drum having a zero position; a triggering arrangement movable from a position of rest to a triggering position to trigger an administering; and a first coupling and a second coupling, wherein the first coupling is between the drive arrangement and the input member and has a coupled position and an uncoupled position, whereby the drive arrangement and the input member are connected with each other to be locked against relative rotation in the coupled position and are detached from each other in the uncoupled position, the second coupling is between the dosing arrangement and the drive arrangement and has a coupled position and an uncoupled position, whereby the dosing arrangement and the drive arrangement are connected with each other to be locked against relative rotation in the coupled position and are detached from each other in the uncoupled position, and in the position of rest of the triggering arrangement the first coupling assumes its uncoupled position and the second coupling assumes its coupled position, so that a rotation of the dosing arrangement is able to be transferred to the drive arrangement and not to the delivery arrangement, and a movement of the triggering arrangement from the position of rest into the triggering position firstly brings about a coupling of the first coupling and thereafter an uncoupling of the second coupling, so that the drive arrangement is released and the resulting drive movement is able to be transferred to the delivery arrangement; and during the advancing movement of the delivery element, the display drum returns to its zero position.