Patent ID: 7717153
Filing Date: 2010-05-18
Classification: E06B

Abstract:
1. A vertical Venetian blind drive unit for a vertical Venetian blind having vertical slats, the drive unit comprising: a shared driving element for the displacing motion and the rotating motion of vertical slats; a first drive means for the rotating motion of the vertical slats; a second drive means for the displacing motion of the vertical slats; a differential gear with a driving element coupled to said shared driving element, and with a first driven element coupled to said first drive means, and with a second driven element coupled to said second drive means for the displacing motion of the vertical slats; another differential gear inserted between said first driven element and said first drive means for rotating motion, said another differential gear having another driving element, another first driven element and another second driven element, said another driving element being coupled to said first driven element, and said another first driven element being coupled to said first drive means for the rotating motion.