US Patent 7615710 Hinge for cable trough cover

A cover for a cable trough system includes a main body that defines a planar surface with a first end and a second end, and a first hinge arrangement at the first end of the main body. The first hinge arrangement includes a planar member that extends from the first end, the planar member including a planar detent, an intermediate member that extends from the planar member, the intermediate member including a first arm with a first intermediate detent and a second arm with a second intermediate detent, and a distal member that extends from a distal end of the planar member, the distal member including a distal detent. The planar member, the intermediate member, and the distal member together define a space sized to receive a portion of a wall of a trough member.