Flowing liquid illusion
US5109620A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 19, 1991 |
| Grant date | May 5, 1992 |
| Priority date | — |
| Expiry date | Aug 19, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67D1/0872
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display providing the illusion of a stream of liquid coming from an unconnected spigot, the stream flowing into a receptacle. A transparent tube, hidden within the stream, runs from the receptacle to the spigot to carry the liquid upwardly to the spigot. A second tube, colorless and transparent, surrounds the stream of water, to prevent evaporation and accidental spillage on a person. A small colorless and transparent air tube runs from the receptacle upwardly between the inner and outer tubes to a mixing chamber at the top of the tubes. Air is drawn upwardly through the tube by a Venturi effect within the mixing chamber and mixes with the water. As a result, the downwardly flowing water is filled with bubbles and can be seen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.