Liquid filled bubbling display
US6187394A · kind A · utility
Inventors
Key dates
| Filing date | Jul 17, 1997 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Jul 17, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S10/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention of a Bubbling Liquid Display includes a variable-pressure air source which injects air into a liquid within a panel at variable flow rates into an number of individual chambers to create a unique bubbling pattern for each chamber which includes large bubbles which move upwards within the fluid in the display, and smaller bubbles which move downwards within the fluid in the display. The display may be drained a single chamber at a time, eliminating the need to completely drain the display for maintenance, and also is substantially leak-proof, despite being tipped or knocked over. The display incorporates a fluid which resists evaporation, corrosion, and algae formation, despite being constantly bubbled or exposed to sunlight or other sources of heat, and which may be effectively recirculated through the display. The display is also adaptable to retrofit vending machines, as well as a variety of other useful items, such as point-of-purchase displays and wall-hangings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.