Patent ID: 8616465

Claim:
A nozzle body for a liquid droplet spray device, wherein the nozzle body is arranged to receive a liquid substance from the liquid droplet spray device and to expel the liquid substance as a cloud of expelled droplets, wherein the nozzle body comprises: (a) a substrate; and (b) a plurality of traversing output nozzles formed in the substrate for ejecting liquid as a low pressure mono-dispersive droplet spray, wherein each traversing output nozzle is arranged to receive liquid so that the liquid is expelled from the nozzle body by traversing the output nozzles, wherein the output nozzles have straight and parallel side-walls that have a near vertical profile, wherein a first distance between adjacent output nozzles that are located at or near a center of the substrate is larger than a second distance between adjacent output nozzles that are located at or near an edge of the substrate, and the output nozzles are arranged in the substrate so that density of the output nozzles increases from the center of the substrate towards the edge of the substrate so that fewer liquid droplets are expelled from the center of the nozzle body as compared to the liquid droplets that are expelled from the edge of the nozzle body.