Patent ID: 8256985
Filing Date: 2012-09-04
Classification: E01F

Abstract:
1. A collapsible barrier for use as a crash barrier comprising: a first pair of members pivotally coupled together at a first coupling; and a second pair of members pivotally coupled together at a second coupling; wherein each member of the first pair is pivotally coupled at a respective lateral coupling to a corresponding member of the second pair, with the first, second and lateral couplings having parallel pivot axes such that the members are movable from an erected configuration where the members define a free-standing three-dimensional structure with an open-ended chamber therebetween, with the first pair of members mutually inclined at a first angular separation, to a collapsed configuration where the members of the first pair are mutually inclined at a second angular separation which is less than the first angular separation; wherein the members are biased to move from the erected configuration to the collapsed configuration when one or the other member of the first pair is lifted vertically, with the second coupling moving as far as possible from the first coupling as the members move from the erected configuration to the collapsed configuration; and wherein at least one part of an attached mechanism is provided at each axial end of the collapsible barrier for joining adjacent collapsible barriers together, end to end, when in the erected configuration.