| 摘要 |
System for operating a blind in a glass-enclosed chamber the ends of said blind being respectively fitted to a fixed upper box ( 40 ) and to a movable box ( 60 ), subjected both to a guide device for translation, parallel to itself, when opening and closing said blind by a pair of cords ( 85, 86 ) interacting between the fixed ( 40 ) and movable ( 60 ) boxes and a lower fixed box ( 50 ), and also to a pulling device comprising a small box containing permanent magnets fixed to the movable box ( 60 ) and a free knob, containing permanent magnets of opposing pole, so that by matching, through a pane of glass, the magnets in said knob with those fixed to the movable box ( 60 ), the blind can be opened or closed as desired.
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