You searched for "parallel misalignment"
Huco
Huco Oldham Coupling, 25mm Outside Diameter, 1/4in Bore Coupler
Part: 852.25.24
Oldham coupling for transferring torque while accommodating misalignment between shafts.
Huco
Huco Oldham Coupling, 25.4mm Outside Diameter, 1/4in Bore Coupler
Part: 452H25.24
Oldham coupling for flexible shaft connection handling misalignment.