| 摘要 |
<p>In a window having a sash (2) that carries a slat blind (4, 5) with a knob (6) for adjustment of the inclination of the slats, and to which belongs an insect screen (9, 10) for detachable mounting in the window main frame (1) inside the sash, said screen is provided with a further knob (11) which through a flexible shaft (13) having a cross-sectionally non-circular head (14) automatically gets in a non-rotative coupling engagement with the first mentioned knob (6) when mounting the insect screen in its position of use.</p> |
