| 摘要 |
A safety visor is designed so as to protect a wearer's face, in particular the eyes, from flying particles such as sawdust, and also pointed objects such as twigs. The safety visor includes a grill network with two groups of grill bars (2, 3) or wires. The grill bars or wires in the one group intersect the grill bars or wires in the second group. The safety visor is made of expanded metal. The grill network (1) has apertures (5) whose form approximates that of a parallelogram or a rhomb.
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