| 摘要 |
A vizor is retained to a helmet A by means of hinging members 22, 24, one member being associated with sliding organs 10, 12 connected with actuating means 26 and 28 by means of which the pivots 20 of the hinges are displaced with respect to the helmet, for the purpose of disengaging the rim of the vizor from a housing A1 located in the opening of the helmet. |
