| 摘要 |
Improvements to roll-up doors of the type consisting of rectangular transverse slats (sheets), in which the slats are preferably transparent and housed in individual end boxes of the articulation means, with their open sides facing, being inserted in them via their larger sides. On one of the inner faces of the boxes, there are one (or more) longitudinal rectangular prismatic projections which fit securely in a groove made for this purpose in the corresponding face of the slat. The slats may be connected by being juxtaposed by their smaller sides, when their standardized length is less than the opening of the aperture the door is meant to close, by means of a joining piece with double mortising (boxing) of opposite open sides, in which the contiguous slats fit securely. |
