Disclosed is a tilt/swivel mechanism for supporting a display monitor. The mechanism includes separate tilt ball and pedestal assemblies which may be snapped together without the use of tools. In like manner, any one of various monitors may be snapped onto the tilt ball assembly to provide a complete...http://www.google.co.uk/patents/US4731030?utm_source=gb-gplus-sharePatent US4731030 - Tilt and swivel assembly for terminal monitor
