| 摘要 |
PROBLEM TO BE SOLVED: To enlarge the movable range of a truck (3) on which a movable part (1) is mounted and to provide a device moved on a circulating track. SOLUTION: A course to be circulated by alternately repeating a gentle uphill road and a slightly steep downhill road equipped with rails 4 is provided and turned to a pedestal (5). Then, an immovable part (2) for which the end of a double sided bipolar magnet is curved is fixed between the rails (4) of all the gentle uphill roads. At the time, the peak side of a curved part is arranged at the peak of the hill. Further, a different double sided bipolar magnet is turned to the movable part (1) and fixed to the truck (3). The truck (3) is installed on the rails (4). Equipment is combined in such a manner.
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