| 摘要 |
It consists of the combination of two symmetrical mechanisms placed on each side of the helmet, consisting of a flat casing in which the end of the visor (screen) 1 with a functional profile moves and which is securely attached to the shell by two slides. It is intended to permit its locking in a closed position, its immobilisation in a partially or totally open position, and is intended to make it possible for it to be changed by means of a simplified dismantling operation. <IMAGE>
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