B05B 1/086

Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, {or having an outlet of particular shape} of pulsating nature, e.g. delivering liquid in successive separate quantities {; Fluidic oscillators the pulsating mechanism comprising movable parts with a resiliently deformable element, e.g. sleeve}