US Patent 7775456 Fluidic device yielding three-dimensional spray patterns

A fluidic device, that operates on a pressurized liquid flowing through it to generate an oscillating spray having desired three-dimensional flow characteristics, includes a member that has fabricated within it at least two liquid flow channels that are configured in the form of a fluidic circuit having an inlet and an outlet and a centerline therebetween. These flow channels are further configured so that the straight line projections of their centerlines, that extend from their outlets, intersect at a prescribed intersection angle, Θ, and the outlets are separated by a characteristic separation distance, “w.” We have found that the values of the intersection angle, Θ, and separation distance, “w,” can be are chosen so as to yield the desired three-dimensional flow characteristics of the spray.