Patent ID: 7963057

Claim:
An apparatus for producing a visual display of moving airborne beads, said apparatus comprising; a. at least a first tubular bead discharge nozzle, said nozzle having at least one air inlet opening at a first transversely disposed end thereof for receiving flowing pressurized air, at least one bead inlet port in a longitudinally disposed wall of said nozzle and at least one bead discharge outlet opening at a second transversely disposed end of said nozzle for discharging beads into the air, b. a pressurized air source for providing pressurized air to said inlet opening of said bead discharge nozzle, and c. a collection platform having a flat horizontally disposed upper surface for collecting beads which have been discharged into the air and subsequently fallen, and conveying said collected beads to said bead inlet port of said bead discharge nozzle solely in response to a venturi effect which cause transversely disposed air-flow into said bead inlet port resulting from longitudinal air-flow through said bead discharge nozzle, said bead discharge nozzle including a tubular body having disposed longitudinally therethrough a bore, a lower end opening of which comprises said air inlet opening, an upper end opening of which comprises said bead discharge outlet opening, and a bead inlet port comprising an aperture which penetrates a wall of said tubular body and communicates with said bore therethrough, said bead discharge nozzle protruding upwardly from said collection platform to thus position said bead inlet port at least partially above said upper surface of said platform.