| 摘要 |
A device presents a tube, fixed to the wall of a helmet and guides for a slide, which can be moved along said guides by means of a cable S. The slide keeps hinged the visor B through a clutch connection, having a pinion which engages a rack 28D fixed to a support. The movement of the slide in one direction X, at first releases the ends of the visor from the shoulder of the helmet and afterwards engages the pinion with the rack, and this induces a swinging movement of the visor B around its pivots. |
