| 摘要 |
PROBLEM TO BE SOLVED: To provide a trailer preventing outward protrusive travel during a curved path travel while eliminating the necessity of U-turn when changing the direction of travel, thereby achieving space-saving transportation. SOLUTION: A turnable front side caster 8 and a rear side caster 9 are installed on both front and rear sides of a vehicle body 5, respectively, and a drawing bar 3 is supported relatively movable back and forth with respect to the vehicle body. In response to a relative displacement of the drawing bar 3 with respect to the vehicle body, the non-towing direction side caster of both these casters 8 and 9 is unturnably fixed by a front side lock member 13 and a rear side lock member 14, while permitting turn of the towing direction side caster of both these casters 8 and 9. COPYRIGHT: (C)2009,JPO&INPIT
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