| 摘要 |
<p>The drive assembly comprises of a mobile square shaft (200) mounted within a guide assembly (100) that includes a series of roller guides (120,120',120'',210). A drive wheel (230), driven by a motor (220) is in contact with the mobile shaft. Rotation o wheel causes an upward and downward motion of the shaft thus enabling control of a window, door or shutter assembly.</p> |
