Patent ID: 6913415
Filing Date: 2005-07-05
Classification: E01F

Abstract:
1. A barrier section having a first end and a second end, said barrier section comprising: a comparatively narrow upright portion having one or more projections and one or more recesses at each end of said barrier section, with the number of said projections at the first end of the barrier section corresponding to the number of recesses at the second end of the barrier section and the number of recesses at the first end of the barrier section corresponding to the number of projections at the second end; a comparatively wide base portion; a nose defining a convexly curved external surface projecting from said comparatively wide base portion at a first end of said barrier section, said convexly curved external surface being a surface of rotation of a profile of said comparatively wide base portion; a cavity defining a concavely curved external surface formed in said comparatively wide base portion at a second end of said barrier section, wherein said concavely curved external surface is a surface of rotation of a profile of said comparatively wide base portion, said projections and recesses being respectively shaped for allowing said projections to be brought up to recesses of an additional barrier section, said additional barrier section having a substantially identical structure to that of said barrier section, said projections and recesses being mated with one another for enabling a hinge pin to be passed through said projections of said barrier section and said additional barrier section so mated, for articulating said barrier section and said additional barrier section together, wherein said respective shaped external surfaces of said nose and cavity are shaped for conforming to one another so that when said nose of said additional barrier section is accommodated in said cavity, substantially all of said concavely shaped external surface of said cavity is juxtaposed with said convexly shaped external surface of said nose in any permitted angular orientation of said barrier sections for preventing any gap between said comparatively wide base portion of said barrier section and a comparatively wide base portion of said additional barrier section.