| 摘要 |
<p>Stabilizer for frames, with a pivot (7) with allen screw spanner (6) which is inserted and fixed with screws which are assembled before in a rectangular hole (9) placed on the shutter of the frame, on the side of the hinge and by a lock (4) which is placed in a second rectangular hole put at the same height of the previous hole, but not on the opposite side.</p><p>The stabilizer includes other two smaller holes (11 and 12), placed on both sides of the frame just a little over the rectangular holes (9 and 10), where a steel cable is made pass from (3) which is at first extracted from the side without hinges and the end of it is tightened to the clamp (4), by leaving it to go again in the chamber of the frame. The same job is done from the side of the hinges, where, instead, the thread is inserted in a hole placed in the stabilizer. At this point the cable is wrapped up thanks to the allen screw spanner (6) and fixed by a lock inside the stabilizer at such a tension force so that the frame maintains the squaring of 90° according to the frame.
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