comprising balls, rollers, or the like between overlapping driving faces, e.g. cogs, on both coupling parts

Full Title

Yielding couplings, i.e. with means permitting movement between the connected parts during the drive (couplings disconnectable simply by axial movement F16D1/10; slip couplings F16D7/00) > Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts > comprising balls, rollers, or the like between overlapping driving faces, e.g. cogs, on both coupling parts