Patent ID: 7137896

Claim:
A constant velocity joint comprising: an outer joint member having an inner surface formed with a plurality of circumferentially distributed ball grooves; an inner joint member having an outer surface formed with a plurality of circumferentially distributed ball grooves: a plurality of torque-transmitting ball assemblies disposed between the grooves of the outer and inner joint members, each of said ball assembly comprising: an annular slide shaft having a first and second lugs at the ends of said slide shaft, an annular roller shaft having an annular aperture for engaging the slide shaft and having an annular outer surface with a centrally positioned ridge forming a first and second tapered portions on each side of said ridge; and a first and second annular sub-rollers, each having an annular aperture for engaging the roller shaft, and a substantially spherical outer surface forming a running face against the inner or outer ball grooves; and a cage disposed between the inner and outer surfaces of the outer and inner joint members and having windows for receiving the ball assemblies and cage webs defined between said windows, said cage web includes a first and second web grooves disposed at the circumferential faces of said cage web extending radially from the inner surface of the cage to the outer surface of the cage.