US Patent 9986799 Wind-proof dual canopy system

A wind-proof dual canopy structure with offset venting in both upper and lower canopies and with inter-canopy suspension structures, keeps the upper and lower vents properly aligned and blocks the perimeter of the lower vents so that rain cannot drip through these vents onto protected persons and/or objects. These inter-canopy suspension structures include elements which are themselves vented, allowing wind that would otherwise get trapped between the canopy layers to escape.