Abstract: A fluid display device that produces the illusion of fluid droplets traveling up, traveling down or levitating, in a stable, smooth, and non-jerky motion. The fluid display device includes a housing, a reservoir for storing the fluid, an outlet nozzle for dispensing the fluid, a pump pulsating the fluid, an inlet for receiving the fluid from the outlet nozzle, and a light source having a color temperature of at least 5000 degrees K operating at or above flicker-fusion frequency to illuminate the fluid droplets.

Abstract: A fluid display device that produces the illusion of fluid droplets traveling up, traveling down or levitating, in a stable, smooth, and non-jerky motion. The fluid display device includes a housing, a reservoir for storing the fluid, an outlet nozzle for dispensing the fluid, a pump pulsating the fluid, an inlet for receiving the fluid from the outlet nozzle, and a light source having a color temperature of at least 5000 degrees K operating at or above flicker-fusion frequency to illuminate the fluid droplets.

Abstract: A lightweight movable work platform includes two pairs of side rails, each side rail having a top end and a bottom end, hinge means connecting each side rail in one of the pairs of side rails in the proximity of its top end to a corresponding side rail in the other of the pairs of side rails in the proximity of its top end, wheel means connecting each side rail in said pairs of side rails at its bottom end, a plurality of spreaders, each of which connects each side rail in the pairs of side rails between its top end and its bottom end, and drive means operable in the proximity of the bottom ends of the side rails for driving the wheel means. The hinge means is operable from a closed position in which the pairs of side rails are stowed together to an open position in which the bottom ends of such pairs of side rails are spread apart in a self-supporting, working position.

Abstract: The invention relates to creating an optical illusion of fluid or water in a display device which shows a solid water stream with undulations that rises, levitates or falls slowly. The illusion can be viewed under certain circumstances in ordinary room lighting. Also, the solid water stream with undulations can simultaneously transform into a set of rising, levitating or falling water droplets. The entire illusion may be examined and even touched by the audience.

Abstract: The invention relates to creating the illusion in a beverage dispensing device of liquid droplets that fill a drinking glass despite their appearance of rising from the drinking glass. The illusion is accomplished by oscillating the liquid and then applying a flashing light source whose frequency is slightly greater than the liquid oscillations. The enclosure and curtains of the invention allow the illusion to be viewed under certain conditions in room lighting. Also, under certain conditions an optical surface is attached to the enclosure which visually masks the ambient light.