Automatic banner roll-up mechanism
US8272155B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jun 14, 2010 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | May 10, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2017/0025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides an automatic banner roll-up mechanism for automatically rolling up a banner or poster, which includes two tubes, a foldable material cloth, a connecting rod, two plugs, a cylindrical spring, a stopper and two mounting supports. One end of the connecting rod is sheathed by one plug and the cylindrical spring, and it is retained in one of the mounting supports. Ball bearings in one of the plugs are engaged with the connecting rod when the plug is rotated to twist cylindrical spring tight. After rotating the plug in a reverse direction to release the cylindrical spring, the connecting rod rotates in the reverse direction, thereby rolling up the foldable material. Further, the foldable material may be coated or printed with various patterns for decorative or sun-shading purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.