Blind for allowing or blocking passage of light through translucent or transparent zones, has overlapping opaque slats of plastic or metallic material horizontally and vertically slidable over such zone

摘要

The blind has overlapping opaque slats of plastic or metallic materials arranged over a translucent or transparent zone. The slats slide horizontally or vertically along guide rails, by connecting the shaft of one slit with a rack and pinion arrangement.