Abstract: The invention relates to a louver blind having louvers (1) that can be pivoted about a vertical axis, displaceably held at both ends thereof by louver holders (2) extending beyond the louver width between an upper and a lower guide track (3). The louver holders (2) are hereby connected to each other by carriages (4) displaceable in the guide tracks (3) and aligned in parallel to each other, and can be pivoted by synchronously driven drive device disposed in the carriages (4). In order to make the installation of the louver blind—or optionally the removal thereof—easier, according to the invention, decoupleable permanent magnets (16, 18) are provided for connecting between the louver mounts (2) and the carriages (4). Said arrangement has the further advantage that the connections can automatically release when critical tension or rotational forces are exceeded, so that damage can be prevented in the connecting parts.

Abstract: The invention relates to a louver blind having louvers (1) that can be pivoted about a vertical axis, displaceably held at both ends thereof by louver holders (2) extending beyond the louver width between an upper and a lower guide track (3). The louver holders (2) are hereby connected to each other by carriages (4) displaceable in the guide tracks (3) and aligned in parallel to each other, and can be pivoted by synchronously driven drive device disposed in the carriages (4). In order to make the installation of the louver blind—or optionally the removal thereof—easier, according to the invention, decoupleable permanent magnets (16, 18) are provided for connecting between the louver mounts (2) and the carriages (4). Said arrangement has the further advantage that the connections can automatically release when critical tension or rotational forces are exceeded, so that damage can be prevented in the connecting parts.

Abstract: In a drive device which is especially suitable for moving and turning the slats of a blind in a runner and in which the rotational movement of a drive wheel (2) can be alternately transmitted to a turning drive means effecting the rotational movement of the slats and to a transport drive means effecting the movement of the salts in the runner, the drive wheel (2) is driven by electric motor and, in addition, the shift of the change gear from its one shifting position into the other shifting position is effected by an electrical signal. For this purpose, a toothed sleeve (3) driving the transport drive means and a toothed sleeve (4) driving the turning drive means is alternately coupled to a drive tube (1), which can be driven via the drive wheel (2), in dependence on the relative rotational position of a reversing shaft (10) in the drive tube (1) via locking members (7, 8) arranged on its periphery.