Patent ID: 7235015

Claim:
A constant velocity joint comprising: a male element ( 4 ) having at least two trunions ( 8 ) and a shaft ( 12 ) extending along a first axis (X—X) and having an outside diameter (DAE), defined by an outer diameter of fluting on said shaft, each of the trunions ( 8 ) having a rolling surface ( 10 ) which extends along a respective second axis (Y—Y), perpendicular to the first axis (X—X), and which has a rolling surface diameter (DSR); for each trunion ( 8 ), a wheel ( 32 ) mounted on the trunion ( 8 ) to rotate about the second axis (Y—Y), and free to slide along said axis, the wheel ( 32 ) having an outside diameter (DGE); and a female element ( 20 ) comprising, for each wheel ( 32 ), a pair of facing rolling paths ( 22 , 24 ), and defining a path primary circle centered on the first axis (X—X) and formed by three points (P) wherein each point is a center of an arc corresponding to said facing rolling paths; wherein a first joint ratio defined as a ratio of the outside diameter (DAE) of the shaft ( 12 ) to a diameter (PCD) of the path primary circle is greater than 0.55, and wherein each wheel ( 32 ) has an axial width (LG) measured along an axis of the wheel (Z—Z), and wherein a second joint ratio defined as a ratio of the axial width (LG) to the outside diameter (DGE) of the wheel ( 32 ) is between 0.28 and 0.32.