Patent ID: 8322633

Claim:
A nozzle assembly for encapsulating an inert gaseous solution in bubbles, comprising: a discharge tube having upstream and downstream ends, the discharge tube having an upstream end consisting of first and second inlet openings, the first inlet opening configured to be joined to an inert gas supply line that provides the inert gaseous solution to an interior of the discharge tube, the second inlet opening configured to be joined to a non-expanded foam solution supply that provides a non-expanded foam solution to the interior of the discharge tube, the downstream end of the discharge tube having a screen and being open to ambient air; a diffuser; a chamber formed within the interior of the discharge tube, the chamber receiving the inert gaseous solution at the upstream end and releasing the inert gaseous solution through the diffuser into the discharge tube towards the downstream end; and a foam solution spray nozzle held within the discharge tube along an axis of the discharge tube and communicating with the second inlet opening to supply from an opening on the axis the non-expanded foam solution on the axis towards the screen.