| 摘要 |
<p>The device (10) for creating a curtain of air across the face is a headset (14) with a fan mounted thereon. The outlet (20) of the fan (16) has flexible tubing or cowling which allows for control of both direction and cross section of a curtain of air that crosses the face. The curtain of air prevents airborne particles and chemicals from making contact with the face.</p> |
