| 摘要 |
<p>A helmet of the integral type (1) including a helmet (2) provided with an aperture (3) closable by means of a movable screen (4). The movable screen is removed from the aperture by a pushbutton (7) actuating a lever (8). The lever is accommodated by the thickness of the helmet itself and bears on the inner face of the screen. In order to move the screen relative to the helmet, the end of a finger is placed between the helmet and the screen and manually opens aperture (3).</p> |
