| 摘要 |
PCT No. PCT/SE89/00537 Sec. 371 Date Apr. 3, 1991 Sec. 102(e) Date Apr. 3, 1991 PCT Filed Oct. 2, 1989 PCT Pub. No. WO90/03907 PCT Pub. Date Apr. 19, 1990.A wheel support structure for a cart, such as a wheelbarrow. The structure includes two separate wheel axis each carrying a wheel. Each wheel axis is mounted on a holding arm, which is pivotable 180 degrees about a vertical frame portion, whereby the pair of wheels can be shifted between inner and outer positions. Upper and lower plate members, forming bearing flange members, are fastened to the vertical frame portion and to a vertical stud portion of the holding arm, respectively, and are selectively securable to each other in order to lock the associated wheel in the respective inner or outer position.
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