| 摘要 |
PCT No. PCT/DK96/00412 Sec. 371 Date Apr. 27, 1998 Sec. 102(e) Date Apr. 27, 1998 PCT Filed Sep. 30, 1996 PCT Pub. No. WO97/18378 PCT Pub. Date May 22, 1997The screening arrangement, in particular a Venetian blind, is intended for installation in a roof window and comprises a screening length having a number of mutually connected elements as well as profile lists to be mounted on each of the side members of the sash and each having a track for receiving a structure displaceable along the track, the structure comprising a spring housing and a slide shoe. The slide shoe is provided with an abutment surface for the elements of the screening length during their gathering during raising of the screening arrangement. A bottom list of the screening length facing the bottom member of the frame is connected at each end with the displaceable structure and loaded in the direction of the bottom member of the sash by a coil spring rotatably mounted in the spring housing, the uncoiled portion of the spring extending in the track in question from the displaceable structure to a fixing point at the bottom member of the sash. The abutment surface of the slide shoe extends in the longitudinal direction of the track to such an extent that it may receive a predetermined number of screening elements, and the spring housing and the slide shoe are displaceable relative to each other in view to reducing the extension of the abutment surface. The spring housing may for instance be guided in a track in the slide shoe.
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