| 摘要 |
A security device (1), particularly for external or internal doors or windows and the like, which comprises a supporting frame (2) that can be associated with an opening (8) to be secured and is provided at least partially by a plurality of hollow bars (5) which accommodate with play inside them bars having a circular cross-section (9); in this way, the free rotation is allowed of each bar having a circular cross-section (9) about its own longitudinal axis (10), with respect to the respective hollow bar (5) that it accommodates. |
