Patent ID: 7150414

Claim:
A rotary disc atomizer, comprising a disc having an axis and rotatable about said axis, said disc also having two opposite outer surfaces as considered in an axial direction, and a peripheral edge, said disc having a plurality of throughgoing openings so that when a liquid is supplied to one of said outer surfaces and flows toward the edge and then droplets are sprayed, the liquid also flows through said throughgoing holes to the other of said outer surfaces so as to also flow radially outwardly on said other surface and form droplets thrown from said edge in a region of said other surface, wherein said disc has a central disc-shaped body and said peripheral flange extending in two opposite axial directions from both said outer surfaces of said body provided with said openings and forming two oppositely directed projections, wherein one of said projections at a side of a liquid supply is shorter than the other of the said projections.