Homokinetic joint allowing a large angular displacement

Abstract From the Canadian patent

The joint comprises a first member defining a tripod connected to a first shaft and forming three trunnions. Part-spherical rollers are respectively slidably and rotatably mounted on the trunnions. A second member connected to a second shaft defines three raceways in which the rollers are received. The raceways are each formed by a pair of part-circular sectioned grooves the mean line of which is an arc of a circle centered preferably in the vicinity of the axis of the second shaft. The tripod is rigid with a shaft section which has in a zone, close to the tripod, a substantially triangular crosssectional shape approximately constituting the envelope of the free edge of the second member …