| 摘要 |
<p>The present invention provides an air flow control nozzle in which a ball (1), which has air-flow passageways (2) therethrough, is at least partially supported in a housing or cowl (2) by an air cushion formed by the pressure of air at the nozzle inlet (5); the ball (1) is urged against an aperture (6) in the cowl by the air cushion and contact between the ball (1) and the aperture (6) prevents the ball from its set orientation; the orientation of the ball (1) can be changed in order to alter the direction of airflow from the nozzle, by simply pressing on the the ball to move it away from contact with the aperture (6), turning the ball on the air cushion to the desired orientation and releasing the ball (1) so that it is once again urged against aperture (6) by air pressure at the cowl inlet (5).</p> |
