| 摘要 |
<p>The device has rotational driving unit constituted of a semi-circular piston for driving a disk in rotation, where the piston is mounted with displacement capacity guided and sealed in a housing that has a case (1). Traction force threads (F1, F2) are coupled to the disk, where the threads correspond to tensioning of a band (B). The piston is controlled by injection of fluid from a chamber (7) presenting the case.</p> |
