Patent ID: 7445556

Claim:
A shaft assembly, comprising: a first shaft having a first yoke, said first yoke including a first aperture having a first groove and a discrete recess communicating with said first groove, the recess axially extending beyond an edge of the first groove; a second shaft having a second yoke, said second yoke including a second aperture having a second groove; a spider having a first trunnion positioned within said first aperture of said first yoke and a second trunnion positioned within said second aperture of said second yoke; a first bearing cup mounted on said first trunnion within said first aperture, said first bearing cup including an end plate segment aligned with said first groove; a second bearing cup mounted on said second trunnion within said second aperture; and a first retention member that is formed in-situ following solidification of a molten polymeric material injected into said first groove and said recess such that a lug is formed within said recess.