| 摘要 |
This invention relates to a bellows folding blind for windows and doors, comprising a number of horizontal slats connected among to each other by means of adequate joints which, when the blind is raised enable the slats to automatically fold like an accordion inside the box. On each slat are applied three pins which are engaged by the teeth of the cams whose rotation allows the raising and lowering of the blind. The helicoidal screws synchronised with the cams engage the longer pin and allow the supporting, raising and lowering of the package of horizontal slats inside the box.
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