| 摘要 |
A device for progressively adjusting the relative positions of two elements, comprising a rack (5), a control knob (4) rotatably mounted on a support (3) above the rack and having its lower face turned toward the latter, a spiral rib (15) centered on the rotational axis (xx') of the control knob and the spiral rib, which axis is inclined with respect to the plane of the rack. The device is applicable to the tightening of ski boots. |
