Patent attributes
A double constant velocity universal joint includes two constant velocity universal joints, each having a cylindrical outer joint member with a plurality of axially extending guide grooves in a spherical inner circumferential surface thereof, an inner joint member with a plurality of axially extending guide grooves formed in a spherical outer circumferential surface, torque transmitting balls each arranged in the ball tracks formed by both guide grooves of the outer joint member and the inner joint member, and a retainer for retaining the balls. The outer joint members are coaxially united back to back, and a cover member having an inner spherical surface that makes sliding contact with the outer circumferential surface of the outer joint member is attached to a shaft that is connected to the inner joint member.
