Scrolling poster display device
US7493715B2 · kind B2 · utility
0Cited by
10References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2006 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Apr 14, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F11/29
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention concerns a scrolling poster display device, comprising two parallel rolls, a poster strip wound on the rolls and a support device for supporting the rear side of the poster strip between the rolls. The support device comprises an air chamber delimited by a peripheral frame and a base offset rearward, and an air blowing device generates an excess pressure of air in the air chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.