| 摘要 |
Two tube-forming longitudinal bars (1) are rigidly connected to each other by cross-struts (3) and carry a seat (7). Using bearings (2), two supports (4) and the horn of a runner (5) are mounted on each bar (1) so as to be able to move about the axis of the bar (1). The supports (4) are rigidly connected to the runners (5) concerned and releasably joined to the cross-struts (3) by means of slanting struts (6). To move the sledge the one runner (5) is hinged with the top of the seat (7) and the other to the underneath of the seat. The sledge has a small transport volume, is stable when in use and has good sliding properties. |
