| 摘要 |
This blind is characterised in that each pulling cable 4 passes, at the end of the unrolling path of the movable apron, over two adjacent fixed return pulleys 6, 7, and it forms, between these two fixed return pulleys, a loop facing the drum, passing over a movable intermediate pulley 9 which is stressed by a spring 10 in the direction of the drum 1. <IMAGE>
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