A control barrier is provided having a barrier wall with one or two support assemblies attached thereto. The barrier wall has a front face with a display recess, wind ports, and tenons and mortises formed thereon. The barrier wall also has a set of projecting arms having either pins or ports to allow...http://www.google.com.au/patents/US6676113?utm_source=gb-gplus-sharePatent US6676113 - Control barrier with rotatable legs
