Patent ID: 8418940

Claim:
A spray nozzle for a fluid product comprising: a front wall, an outlet channel extending through said front wall, said outlet channel being delimited by a lateral surface substantially of revolution about an axis perpendicular to the front wall, the lateral surface of the outlet channel comprising at least one relief arranged radially in relation to the axis, an intake conduit suitable for feeding the fluid product into the outlet channel, the intake conduit and the outlet channel being suitable for entraining the fluid product in a rotation movement about the axis in a direction of rotation, said intake conduit extending in a plane perpendicular to the axis, substantially tangentially to the lateral surface of the outlet channel, the intake conduit extending between an upstream end suitable for being fed with fluid product and a downstream end opening into the lateral surface of the outlet channel, wherein the relief comprises at least one recess arranged on the lateral surface of the outlet channel, said lateral surface consisting of a surface that is generated by the movement of a rectilinear or curved generatrix, parallel to the axis, along a closed circular or elliptic directrix, and that presents locally a slope departing from the axis in the direction of rotation of the fluid product in the outlet channel and forming the recess, said recess being suitable for forming a static surface layer of fluid product.