Portable curtain retraction device and system
US7703499B2 · kind B2 · utility
5Cited by
24References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2007 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Apr 15, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/2622
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A portable barrier retraction device and system for retracting and deploying barriers, such as theatrical curtains. The portable barrier retraction device for retracting and deploying barriers, such as theatrical curtains. The device includes a rotatable shaft in rotational communication with a first drum. The device further includes a detachable rotatable second drum rotational communication with the first drum. The second drum further including at least one spool configured to retract or deploy at least one line in response to rotation of the second drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.