US Patent 8701887 Stackable container

A container adapted to be stacked on top of a second container is provided. The container includes a first end wall and a sidewall having a first end and a second end. The container includes a first seam coupling the first end wall to the first end of the sidewall, the first seam including a shoulder extending inwardly from an outer surface of the first seam. The container includes an alignment feature extending from the shoulder away from the first end wall. The alignment feature is adapted to align the container relative to the second container and to resist lateral movement of the container relative to the second container when the container is stacked on top of the second container.