| 摘要 |
An apparatus (10) for adjusting the position of the slats (12) of Venetian blinds (14) comprises means for packing and extending the slats, means for adjusting the angular position of the slats and lost-motion means (108) interposed functionally between the said packing and extending means and the said adjustment means in such a way as to lock the said Venetian blind adjustment means after a predetermined number of rotations of an actuating shaft. The lost-motion means comprise three toothed elements (110, 114, 116) in functional sequence, a first one of which is functionally connected to the said slat packing and extending means and a third one of which is functionally connected to the said adjustment means. The toothed elements (110, 114, 116) are housed inside each other. <IMAGE>
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