Patent ID: 7654768
Filing Date: 2010-02-02
Classification: E01F

Abstract:
1. A security wall comprising: a) a row of coupled barriers, each barrier comprising respectively: b) for each adjacent pair an instance of means for coupling the tie-bar of one of the barriers of that adjacent pair to the tie-bar of the other barrier of that adjacent pair, and for each adjacent pair at least one instance of means for retaining in one of the cavities between the barriers of that adjacent pair for retaining the instance of means for coupling from entry into the tunnel that opens into said one of the cavities; whereby said coupled barriers have sufficient strength to remain coupled throughout a terrorist event that is one selected from the group consisting of a colliding terrorist's vehicle and a terrorist's explosive blast; and whereby forces from said terrorist event can be strong enough to cause at least some of the coupled barriers to slide across a supporting surface, and can cause breakage of solid material where the solid material interferes with rotation between adjacent barriers.