Patent ID: 8246266

Claim:
A linkage arrangement for a rearview mirror comprising: a first linkage component having a ball socket having a concave surface including a plurality of first profilings which are one of concave and convex and have a longitudinal axis; a second linkage component having a convex projection including a plurality of second profilings which are one of convex and concave and have a longitudinal axis; a sliding plate carried between said ball socket and said projection having a plurality of third profilings which are one of convex and concave and are configured to be received in said first profilings of said ball socket and a plurality of fourth profilings which are one of concave and convex and are configured to be received in said second profilings of said projection; said second profilings of said projection and said third profilings said sliding plate having a larger radius of curvature than said fourth profilings of said sliding plate and said first profilings of said ball socket; and, a connecting rod connecting said first linkage component, said second linkage component, and said sliding plate together; wherein, said larger radius of curvature of said second and third profilings of said sliding plate and said projection allows said second and third profilings to be fully received in said first and fourth profilings of said ball socket and said sliding plate only after abrasive wear, thereby extending the life of said linkage by continuing to prevent play between the components.