Ball-and-socket joint includes a joint housing (1) and a ball head (2) with a ball pivot (3). A bearing shell (4) is disposed between the ball head (2), the joint housing (1), and a housing cover (5). A compressive force is produced between the housing cover (5) and at least a portion of the bearing...http://www.google.se/patents/US6840697?utm_source=gb-gplus-sharePatent US6840697 - Ball-and-socket joint with bearing shell
