| 摘要 |
The towing member (10) engages a vertical curved abutment surface (20) on the trailer. The abutment surface consists of circular edge sections (20a,20b). The towing member has runners (11,12), movable along the curved abutment surface. In one position, the runners are each located on each edge section, when the towing and trailer vehicles are aligned. In the other position, the runners are both on the same edge section, when the towing and trailer vehicles are out of line. |
