Patent attributes
A security fence includes a pair of posts and a plurality of rails supported by the pair of posts and disposed vertically spaced apart. Each rail includes a bottom wall and an upper wall, each defining a plurality of spaced apart openings. A plurality of pickets are horizontally spaced apart along the plurality of rails, each picket extends through a respective bottom opening and a respective upper opening of each rail. A slide lock bar is disposed within at least one of the plurality of rails and is supported by the bottom wall of the one of the plurality of rails. The slide lock bar traverses the plurality of pickets and is received by a notch in each picket. Engagement of the slide lock bar with the notches enables angular displacement of each picket with respect to each rail.