Patent ID: 7537411

Claim:
A barrier device, comprising: a top wall, a bottom wall, first and second side walls and first and second end walls interconnected to collectively define a hollow interior adapted to be at least partially filled with a ballast material, a longitudinal axis extending between said opposed end walls; said first end wall being formed with a first coupling element extending from said top wall to said bottom wall, said first coupling element comprising: (i) an inner cavity defined by a curved surface of said first end wall and having opposed ends which are spaced from one another; (ii) a first arm extending from one end of said inner cavity, said first arm being formed with a pivot surface and a stop surface; (iii) a second arm extending from the other end of said inner cavity and being spaced from said first arm, said second arm being formed with a pivot surface and a stop surface; said second end wall being formed with a second coupling element extending from said top wall to said bottom wall, said second coupling element comprising: (i) a concave pivot surface extending from said first side wall to said second side wall; (ii) a neck protruding outwardly from said concave pivot surface and terminating with a pivot pin.