| 摘要 |
Embodiments of the pivot wheel assembly include a motor and a wheel. For example, a pallet may include a pivot wheel assembly at each corner, and each wheel is driven by its own motor. The pivot wheel assembly pivots and locks in the two 90 degree positions used for X and Y travel of the pallet. In some embodiments, each wheel assembly can be positioned in various positions in addition to the 90 degree positions. For example, the four wheel assemblies can be positioned to allow the entire pallet to rotate about its own center.
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