US Patent 7509921 Flag holder for warning signs

A display system for use with a sign panel includes a bracket with a securement for attachment to a sign panel structure such as a support rib, to receive support therefrom. The bracket includes pairs of diagonally spaced apart support surfaces with each pair of support surfaces defining a channel for receiving a respective flag staff, to support opposite sides of a flag staff at spaced apart locations. A pivot connection pivotally attaches the flag staffs to the bracket, bringing the flag staffs into alignment with the support surfaces as the flags are rotated between an open or display position and a closed or storage position.