| 摘要 |
A portable barrier retraction device and system for retracting and deploying barriers, such as theatrical curtains. The device includes a first drum, a rotatable shaft in selective rotational communication with the first drum, and a clutch configured to disengage the first drum from the rotatable shaft. The device further includes a detachable rotatable second drum in rotational communication with the first drum. The rotatable shaft selectively imparts rotation to the second drum by selectively imparting rotation to the first drum. The second drum includes at least one spool configured to retract or deploy at least one line in response to rotation of the second drum. |
