Precision cord drive used in e.g. clean rooms of electronic industry, has spirally-grooved drum with one or more cords connected to its edges

摘要

The drum has a circumferential, left- or right hand threaded, single- or multiple-start, spiral groove (20). One or more cord (also imports cable or rope) terminations (25) and/or one or more rope sections are connected to the drum (24) and/or one or both of its edges. Connection is frictional and/or interlocking.