| 摘要 |
<p>The sled has sled frames connected with one another by a seat (5) and two cross beams. Rotational position of one of the rotational axis of each beam is limited by a catch at a side end of one of the beam or one of the frames or one of the rotational axis or one of a support of one of the axis, in an opened condition of the sled. The rotational position of one of the axis is arrested by an arresting device in a force fit manner.</p> |
