Patent ID: 7094156

Claim:
A joint assembly comprising: an outer joint member having a concave inner surface and at least one concavely curved ball groove formed in said inner surface; an inner joint member supported in said outer joint member for relative angular movement of said inner and outer members, said inner joint member having a convex outer surface and at least one convexly curved ball groove formed in said outer surface and aligned with said at least one ball groove of said inner surface to provide a corresponding at least one curved ball track; at least one ball rollingly disposed in said at least one ball track for permitting said relative angular movement of said inner and outer joint members while supporting said inner and outer joint members against relative rotation; and a dynamic seal device fixed to said outer joint member and slideably and sealably engaging at least one associated sealing surface of said inner joint member during said relative angular movement of said inner and outer joint members to provide a sealed environment to said at least one ball; wherein said seal device has at least one annular seal lip.