| 摘要 |
Protection device intended to protect pedestrians in a no-entry zone where there is a danger of being hurt by security spikes in their defensive position. It comprises a box 1 fitted with security spikes 6 which, under the action of appropriate actuators when it is put into defensive action, lift the panel 2 forming the lid of the box 1 of which the top rests on rollers 8 placed over the teeth of the spikes. It has its application in restricted-access one-way passages such as: entrance to underground garage, private property, etc. <IMAGE>
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