Roll-up sign
US5884424A · kind A · utility
46Cited by
30References
16Claims
0Family size
Inventor
Key dates
| Filing date | Feb 14, 1997 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Feb 14, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F11/29
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A portable roll-up sign having a simplified and economical construction. The sign face is a flexible pvc based sheet that can be imaged on both sides with vinyl graphics or silk screen inks. The sign frame comprises two vertical legs and an intermediate header, all field assembled by mutual interlocking without fasteners or tools. Vertical edges of the face sheet are joined to respective legs by the sign manufacturer by wrapping the same through at least a full turn and clamping with specially shaped retaining clips.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.