Device for winding a band, in particular for a poster board having moving posters
US4205801A · kind A · utility
1Cited by
4References
6Claims
0Family size
Inventor
Key dates
| Filing date | Dec 22, 1978 |
| Grant date | Jun 3, 1980 |
| Priority date | — |
| Expiry date | Dec 22, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2011/0072
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This device is of the type comprising a frame and two rollers which are mounted to rotate on the frame, about parallel axes. The band is fixed at both ends to the rollers. Means for driving in rotation at least one of the rollers and means for regulating the tension of the band between the rollers are provided. The means for driving in rotation are constantly engaged with the corresponding roller and means for regulating the tension of the band are means for relaxing the tension of the active part of the driving means and means for simultaneously increasing the tension of the passive part of the driving means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.