Patent ID: 8905270

Claim:
Triggered dispensing device for a liquid, comprising: a pumping chamber and a piston sliding sealed in the pumping chamber along a piston axis, the chamber having a bottom wall, wherein the bottom wall is perpendicular to a piston axis along which the piston slides, and where a pumping chamber inlet and a pumping chamber outlet are located along a vertical line extending along a surface of the bottom wall and separated by a length of the bottom wall; a trigger operatively connected to the piston to move it: a suction pipe fluidly connectable to a container of the liquid to be dispensed, wherein the suction pipe is connected with the pumping chamber through a suction opening obtained in the bottom wall; a dispensing pipe having extension along a dispensing axis, fluidly connected at an extremity to the pumping chamber through an inlet opening and, at the other extremity, fluidly connected with the outside environment, wherein the inlet opening is surrounded, outside the dispensing pipe, by a crown surface; a suction valve comprising a diaphragm housed in the pumping chamber, suitable for regulating the flow of fluid between the suction pipe and the pumping chamber, wherein the suction valve is applied to the bottom wall where the bottom wall is perpendicular to the piston axis along which the piston slides; a delivery valve, structurally distinct from the suction valve, comprising a baffle outside the dispensing pipe, suitable for regulating the flow of fluids between the pumping chamber and the dispensing pipe, wherein the diaphragm of the suction valve, in the liquid dispensing phase, is abutting on the bottom wall and covers the suction opening, and wherein the baffle of the delivery valve, in the return phase, is abutting on the crown surface which surrounds the inlet opening of the dispensing pipe.