| 摘要 |
<p>An ergonomic hand knob for a control valve includes a valve body and a plurality of flutes disposed in the valve body, each flute including a flute surface. Each flute is asymmetric with respect to an innermost point of the flute surface. A first flute surface has a greater slope than a second flute surface. The first flute surface lays in a direction of tightening from the innermost point and the second flute surface lays in a direction of loosening from the innermost point.</p> |
