Visual display and method of providing a visual display
US7311580B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 2004 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Jan 2, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F19/008
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Outer and inner inflatable members and a motor assembly including a fan are disposed on a base member. Air provided under pressure by the motor assembly including the fan passes through vents in the base member to inflate the inflatable members. Flakes are disposed in the space between the inflatable members. One vent, larger than the others, provides for the flakes to be lifted upwardly from the base member by the pressurized air. At least another vent in the base member provides for a movement of the flakes by the pressurized air in an annular direction in the space between the inflatable members. A permeable cap disposed on the outer inflatable member limits the pressure in the outer and inner inflatable members to a particular value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.