Double freewheel able to permit clockwise and anti-clockwise rotation has locking ring positioned in bush with gap round it

摘要

The double freewheel has a locking ring (2) positioned in a bush round a shaft (1) by spacers (5) so that when a second shaft (3) begins rotating, an automatic friction or positive connection comes into effect between the two shafts through radial displacement. The locking ring can be set to an eccentric position using e.g. a cam (4) on the second shaft