Patent ID: 8978880
Filing Date: 2015-03-17
Classification: B65G

Abstract:
1. A conveyor system, comprising: pulleys spaced mutually along a length of the conveyor system; a belt drive for transmitting rotating power to at least one of the pulleys; roller assemblies, each roller assembly aligned with one of the pulleys, and at least one of the roller assemblies including a rotationally fixed shaft centered about an axis, a sleeve shaft concentric with the shaft and rotationally fixed to the corresponding pulley, a first ring spaced axially from the corresponding pulley and concentric with and rotationally fixed to the sleeve shaft, a second ring surrounding the first ring, and a third ring located radially between and contacting the first and second rings, and alternately transmitting rotary motion from the first ring to the second ring and discontinuing said transmission of rotary motion depending on presence and absence of rotational drive engagement between the third ring and at least one of the first ring and the second ring; and bearings supported on the shaft, each bearing supporting one of the pulley and the first ring for rotation on the shaft.