| 摘要 |
<p>The grid is comprised of plates (2) and tubes (3, 4) or bars (12, 18, 33, 34, 35) which can be coupled perpendicularly by respective connection means, as well as means for fixing the plate (2) to the wall for installing it to a window, or for its installation as a fence with the plate (2) anchored to the ground. A rod (4) is incorporated inside the tube (3) and extends beyond its extremities and traverses the plates (2) against which they are adjusted by means of breakable head nuts (1) by tightening the nut up to a tightening torque which causes the hexagonal head to break. <IMAGE></p> |
