Abstract: Device for supplying at a constant rate a fluid utilizing apparatus with at least one fluid of variable viscosity, comprising a fluid source delivering said variable viscosity fluid, a first fluid circuit connecting said fluid source to the fluid utilizing apparatus, a second fluid circuit in which flows a constant viscosity fluid, two volumetric pumps mechanically coupled so that their flow rates are in a fixed relationship, a first one of the two pumps being inserted in the first fluid circuit, whereas the second pump is inserted in the second fluid circuit, and adjusting means inserted in the second fluid circuit, downstream of the second pump, for adjusting the flow rate of the constant viscosity fluid. The supply device is particularly suitable for supplying a spray gun with paint.

Abstract: This pneumatic spray gun for atomizing paint comprises a flat-jet nozzle of the type utilized in hydrostatic atomization spray guns, this nozzle being surrounded by compressed-air jets disposed symmetrically and parallel to the flat jet of paint so as to envelope and drive same, other compressed-air jets being disposed symmetrically in a plane perpendicular to the flat jet of paint and converging thereagainst, whereby a satisfactory atomization is obtained which precludes not only the detrimental high pressure values of hydrostatic atomization, but also the considerable output of compressed air of conventional pneumatic atomization and the attendant losses of paint and other inconveniences deriving therefrom.