| 摘要 |
The device comprises a crossmember 1 fixed to a leaf, a strut 2 which can, at one end, slide along the crossmember but is immobilised in displacement towards the wall 37 by a stop stirrup which can slide but is blocked, a clevis 3 fixed to the wall and to which the other end of the strut 2 is locked. The crossmember of the device, made of steel, reinforces the leaf. The device offers high security. <IMAGE>
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