US Patent 7246780 Stackable multiple support arm for electronic devices

A mounting apparatus includes a plurality of arm mounts which are rotationally coupled in a vertical column in end to end relationship to provide a nested arrangement thereof. A support arm is attached to each of the arm mounts to which an electronic device is attached. The arm mounts are secured in nested arrangement between a pair of mounting plates which engage the ends of an elongated shield at least partially surrounding the arm mounts.