| 摘要 |
An improved switch for an overhead trolley track system, which is adaptable to be inserted between intersecting tracks and adjustable for handling trolley movement from one track to another. The improved switch includes a unique pivot and shaft assembly whereby the hub member attached to the track lift piece rotates or pivots freely about an outer shaft without applying force to an inner shaft mounted to the track, thereby avoiding constant maintenance, malfunctions, and system interruption.
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