US Patent 7144326 Constant velocity coupling and control system therefor

A constant velocity coupling which rotabably connects an input shaft to an output shaft by means of a control mechanism or control system which, in particular forms, includes a gimbal arrangement comprised of an inner yoke rotatably connected to an outer yoke. The control mechanism including control yoke constrains at least portions of the coupling to lie on or in association with a homokinetic plane of the coupling. In particular forms the control mechanism operates symmetrically about supplementary angle bisector.