Abstract: The invention relates to a liquid or pasty product dispenser comprising a mounted working piston. According to the invention, the dispenser comprises a hollow body with a piston mounted therein and a toothed wheel is connected to the piston by means of threads, said piston being blocked in rotation in the body. In this way, when the toothed wheel is actuated, the piston moves axially and the product is dispensed in a controlled manner. Preferably, an outlet-sealing needle valve passes through the piston.

Abstract: The invention relates to a valve nozzle for a dispenser for a liquid cosmetic product, the nozzle including a reservoir and an internal piston which is actuated by the displacement of a base. The inventive nozzle is characterised in that it comprises a cap which closes the reservoir and is provided with a dispensing opening that can be closed in a sealed manner by a pin fixed to a spacer which is arranged inside the cap in a sliding manner and is provided with at least one line which successively ensures the emptying of the reservoir and the discharge of the product. According to the invention, the cap and the spacer define a space with a wall that has at least one elastically deformable region, enabling the pin to retract from the dispensing opening, following the actuation of the piston, in order to ensure the discharge of the product.

Abstract: The invention relates to a liquid or pasty product dispenser comprising a mounted working piston. According to the invention, the dispenser comprises a hollow body with a piston mounted therein and a toothed wheel is connected to the piston by means of threads, said piston being blocked in rotation in the body. In this way, when the toothed wheel is actuated, the piston moves axially and the product is dispensed in a controlled manner. Preferably, an outlet-sealing needle valve passes through the piston.