Patent attributes
A drive unit for a vertical Venetian blind includes a shared driving element (15) for the displacing motion and the rotating motion of vertical slats. A differential gear (13) is provided with a driving element coupled to the shared driving element (15), a first driven element (17) coupled to the first drive means (21) for the rotating motion of the vertical slats, and a second driven element (16) coupled to second drive means for the displacing motion of the vertical slats. Displacing motions and rotating motions of the vertical slats can be driven by the shared driving element (15). A complete closing of the vertical slats is made possible in both directions of rotation and, at the same time, a hooking up of the vertical slats by means of displacing same in an unsuitable rotating position is prevented.
