Patent attributes
Methods of molding fluidic oscillator device having at least a power nozzle for projecting a jet of liquid into an interaction region with an upstream end, opposing side walls, opposing top and bottom walls, and a pair of control ports at the upstream end. The side walls diverge from the power nozzle. A mold cavity is provided in which the power nozzle, interaction region (IR) and control ports can be molded as a core without any seam lines. For a crossover type IR in which the upstream ends diverge and the downstream ends converge to a common throat area and coupled to an outlet aperture, a further mold cavity is provided in which the converging portion of the crossover type interaction region is formed as a second core having a joinder line to the first the core which is transverse to the direction of liquid flow in the fluidic.
