US Patent 9695612 Aluminum fence design

A fence having one or more horizontal rails with one or more apertures extending through the one or more horizontal rails, one or more vertical pickets, each of the one or more vertical pickets passing through the one or more apertures, each of the one or more vertical pickets having one or more openings and having one or more walls, and one or more retaining elements fixed within a horizontal rail, each of the one or more retaining elements having a base portion and one or more protrusions, the one or more protrusions engaged with the one or more openings in the one or more vertical pickets to secure the one or more vertical pickets to the one or more horizontal rails. The vertical pickets are fixed against lateral or transverse movement relative to the horizontal rails, and rotatable relative to the horizontal rails.