Abstract: A table top hydro-mechanical candelabra display device is provided that combines in one small package the comforting light of a candle, the tranquil sounds of a waterfall, and the mood elevating splash of vibrant colors, to name a few. The display device includes a transparent reservoir for containing liquid; a plurality of lights disposed below a bottom portion of the reservoir; a pump inside the reservoir; a first pressure chamber fed by the pump; a rotating candelabra; and a waterfall creating cavitation bubbles to camouflage the unsightly hardware. The device may also include a second pressure chamber. Liquid is pumped from the reservoir into the first pressure chamber flows through openings back into the reservoir and into the second pressure chamber, from which it also flows into the reservoir. The force of the flowing liquid causes the candelabra to rotate and creates the bubbles.

Abstract: A hydromechanical display device includes a reservoir, a pump, an upper pressure chamber, a plug-in receptacle containing a plug-in variable pressure module, a control valve, and a lower channel, including a constant pressure compartment and a variable pressure compartment.

Abstract: A hydromechanical display device includes a reservoir, a pump, an upper pressure chamber, a plug-in receptacle containing a plug-in variable pressure module, a control valve, and a lower channel, including a constant pressure compartment and a variable pressure compartment.

Abstract: A night light with integrated water features is provided. Changing audial frequencies are generated by the cavitation bubbles in the lower chamber and simulate the tranquil, calming effects of gently tumbling waves on a beach. The cavitation bubbles also sparkle with color when illuminated by lighting below the lower chamber, providing substantial augmentation of the visual display. Colorful beads in the bead chamber are propelled in graceful random multidirectional movements, simulating the unpredictable movements of fish. Thus, the night lamp with integrated water features may serve as a maintenance free surrogate fish bowl.