Structure of a publicity scroll
US7350325B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jan 11, 2007 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Jan 11, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F11/29
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scroll for publicity includes a housing sleeve, a banner, a winding mechanism, and a pulling rod; the banner is printed with words and images; the winding mechanism is housed in the housing sleeve, and connected to one end of the banner for rolling up the banner; the winding mechanism includes a connecting pipe connected to the banner, and a torsion spring positioned in the connecting pipe; the banner is normally wound around the connecting pipe; when the pulling rod is being moved away from the housing sleeve to spread out the banner for showing the words and images for publicity, rotational energy will be stored in the torsion spring; the banner will be automatically rolled up around the connecting pipe, and the scroll closed after the user stops exerting force on the pulling rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.