| 摘要 |
<p>An aluminum construction element for assembling together with like elements an interlocking roll-up grid or web said element comprising an extruded aluminum profile composed of three connected parallel tubes aligned in the same plane such that a middle tube is connected on two opposite sides to outer tubes, said profile having sections cut away from each of the outer tubes at predetermined intervals leaving other outer tube sections attached to the middle tube in the plane of the profile, said cut away sections and said other outer tube sections of one outer tube alternate with the cut out sections and other outer tube sections of the other outer tube, so that the other outer tube sections on one side of the middle tube of one element can be pivotally coupled with the other outer tube sections of the other side of the middle tube of a second element.</p> |
