| 摘要 |
The device has two winding cylinders (1a, 1b) parallel to each other, and a longitudinal shaped connection element for maintaining a preset distance between the cylinders. Flexible tracks (20a, 20b) are fixed on each cylinder, and have a spiral shape and arranged such that a contact point (P) between the tracks is offset relative to a crossing point (C). The points are not aligned on a same axis parallel to revolution axes of the cylinders such that a torque (R) dependent on a distance (D) between the points is applied to the contact point, where the torque causes rotation of the tracks. The torque is constant and variable. The shaped connection element is formed by winding strips or cables. |
