Patent ID: 6948996

Claim:
Bubble-In-Bubble generating assembly comprising: a bubble generator having side walls which define a cavity therein and a first opening which is in communication with the cavity; a first ring having side walls which define an opening there through; the area of the opening in the bubble generator being smaller than the area of the opening in the first ring; the first ring and the bubble generator being coupled together; a plane across the first opening in the bubble generator being in a non-parallel relation to a plane across the opening in the first ring; first means for coupling a first stream of gas into the cavity in the bubble generator; and the openings in the first bubble generator and the first ring being adjacent and positioned relative to each other such that a bubble generated at the opening in the first bubble generator is adjacent the opening in the first ring thus enabling the bubble to be blown into the opening in the first ring to generate a bubble within a bubble.