Patent ID: 7705745

Claim:
A signal column comprising: signaling stages mounted in a stacked arrangement along a main axis and fastened to one another by rotation, the signaling stages each including a body that includes a base and a cylindrical wall, and housing a signaling member and conductors distributed over a periphery of the body and that extend parallel to the main axis to provide an electrical connection between a power source and the signaling member, the conductors housed in the respective stages including conducting rods, the conducting rods housed in each stage comprising a common rod to connect to an adjacent following signaling stage and at least one stage-specific rod not connected to an adjacent following signaling stage, wherein the common rods are identical in shape to the stage-specific rods, and from one signaling stage to an adjacent following signaling stage, the common rods have a substantially identical angular positioning relative to one another and the stage-specific rods have an angular offset with respect to one another.