Patent ID: 9493306
Filing Date: 2016-11-15
CPC Classification: B65G,H01L,Y10S

Claim Text:
1. In a system for using a first, driven shaft to rotationally drive a second shaft, a configuration comprising: first and second toothed flexible closed-loop members; and a first pulley arrangement mounted on said first shaft and a second pulley arrangement mounted on said second shaft for receiving the first and second toothed flexible members in a side-by-side relationship such that at least a particular one of the pulley arrangements includes a first pulley engaging the first toothed flexible member and a second pulley engaging the second toothed flexible member, each of the first and second pulleys having a tooth receiving configuration which cooperates with said first and second toothed flexible members to provide a given backlash clearance when engaged with the first and second toothed belt members, respectively, and said first pulley and said second pulley are mounted with a rotational offset therebetween such that the tooth receiving configuration of the first pulley is rotationally offset with respect to the tooth receiving configuration of the second pulley, based on said given backlash clearance, in a way which limits an operational backlash of the particular pulley arrangement with respect to movement of the first and the second toothed flexible members to a value that is less than the given backlash clearance.