LIQUID DISTRIBUTION DEVICE OSCILLO-ROTATING WITH SPRING AND ITS M E THODE The present invention relates to a liquid product dispensing device comprising a fixed part and a movable part; the fixed part comprising a suction orifice, a delivery orifice, a body comprising a cavity into which said orifices open, said cavity being able to partially receive the movable part, the remaining volume forming a drain chamber; the movable part being able to move partially in the cavity of the fixed part and comprising a piston, a piston driving element, an axial spring, a duct extending along the circumference of the piston, said duct making it possible to '' on the one hand positions allowing fluid communication between the emptying chamber and only one of said orifices and, on the other hand, switching positions in which any fluidic communication between the emptying chamber and each of said orifices is prohibited, a cam capable of transforming the rotation of the drive element in oscillating-rotary motion of the piston. The device according to the invention is characterized in that the axial spring is able to absorb energy during a liquid suction phase and to restore it during a liquid delivery phase, said spring being positioned around the piston which is located on the movable part located in the body cavity. Figure of the abstract : Fig. 1
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