Patent ID: 8083159

Claim:
A push-button nozzle for a liquid or semi-liquid product dispenser comprising means for delivering the product under pressure which are mounted on a product-containing bottle and provided with an ejection tube projecting outside, said nozzle comprising: a needle valve for tightly closing a spraying orifice arranged at the end of said nozzle, said needle valve comprising an integral collar, displacement of which needle valve is commanded by an internal pressure inside a pre-compression cell, said pre-compression cell formed above said collar; means for fixing on the ejection type tube, said fixing means comprising a barrel, one of the ends of which having a ring for a connection to the ejection tube and defining a recoil chamber tightly closed by a peripheral sealing ring supported by said collar of said needle valve, said recoil chamber formed beneath said collar of said needle valve; means for supplying the product to a turbulence chamber located close to said orifice, said means comprising a core, through which is provided a central bore for guiding an axial rod formed above said collar and integral with said valve, said core having means for connection with said barrel and arranging a downstream side channel which opens laterally at the upper part of the turbulence chamber, said side channel comprising an annular channel at least partially surrounding the pre-compression cell, said pre-compression cell defined under said core and above said collar; and an inner sleeve in which said barrel is fitted, said inner sleeve defining an intermediate annular space for said liquid product, said space composing at least partially the means for supplying said product from the end of the ejection tube up to the vicinity of said spraying orifice, wherein said side channel divides flow of the product and separately feeds product to the pre-compression cell and to the turbulence chamber so that the nozzle separates the functions of guiding the needle valve and circulating the product to the turbulence chamber, and wherein a cross-section of said side channel remains unchanged during displacement of said needle valve.