Patent ID: 9033260
Filing Date: 2015-05-19
Classification: B05B,E03C,Y02A

Abstract:
1. A water saving aerator adapted to be attached to a water tap, comprising; a water saving disc covering an outflow opening of the water tap and having a through-hole whose total water outflow cross-sectional area is less than a cross-sectional area of the water tap; a first cylinder comprising a wall with inner and outer surfaces and an air cavity inside, the air cavity containing air while water is flowing therethrough; and a diffuser object disposed in the first cylinder for diffusing a water flow coming from the water saving disc in a peripheral direction, the diffuser object comprising a diffuser surface having an inclined smooth surface with reduced height in the peripheral direction and a pillar shaped lower object that extends from a lower portion of the diffuser surface to substantially the same height as a lower end of the wall of the first cylinder, the lower object having a cylindrical surface that extends to a bottom of the aerator along the inner surface of the first cylinder so as to form a thin tubular shaped water passage; wherein the water passage transforms the water flow into a thin tubular shaped water flow while being filled with the water flow so as to block air backflow through the water passage to reach the air cavity, and the water passage is configured sufficiently thin and long so that air tightness is maintained between the water passage and the air cavity when water is flowing.