by the provision of two intermediate members each having two relatively perpendicular trunnions or bearings

Yielding couplings, i.e. with means permitting movement between the connected parts during the drive > Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts > Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slideably connected > in which the coupling is specially adapted to constant velocity-ratio > by the provision of two intermediate members each having two relatively- perpendicular trunnions or bearings

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 > Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected (F16D3/18, F16D3/20 take precedence) > in which the coupling is specially adapted to constant velocity-ratio > by the provision of two intermediate members each having two relatively perpendicular trunnions or bearings