| 摘要 |
<p>The shutter assembly consists of a winding roller with a rotary drive member, driven by a strap terminating in a winding mechanism, fitted on the wall inside the room. The shutter consists of an elastic foam sheet which is compressible enough to take up little space, when wound on the roller. On the room side of the sheet is loosely fitted a decorative and neat reflecting sheet at a distance from the shutter sheet. Both sheets are fitted on their bottom edges with a slat which keeps them taut during winding operation.</p> |
