Patent ID: 7677480

Claim:
A fluidic lid-oscillator combination that operates on a pressurized liquid flowing through said combination to generate an oscillating spray of liquid droplets into a surrounding gaseous environment, said combination comprising: a fluidic oscillator having a boundary surface that has fabricated therein a flow channel with upstream and downstream ends, a specified depth and a means for inducing oscillations in said liquid that flows through said channel, a lid having an interior and an exterior surface, with said interior surface configured to attach to said oscillator boundary surface so as to form with said channel an enclosed pathway through which said liquid flows, wherein said lid interior surface having upstream and downstream ends, wherein a portion of said lid interior surface that is proximate said downstream end being sloped at a herein defined lid slope angle, β, with regard to said lid interior surface portion that is proximate said upstream end, and wherein the depth of the downstream portion of said oscillator channel that is beneath said tapered lid interior surface increasing in magnitude, relative to the depth of the upstream portion of said channel, in said channel's downstream direction.