US Patent 9420915 Blending jar with ridges

A blender jar with ridges has a bottom wall positioned below a movable blending member, a sidewall surface extending upward from the bottom wall, and a plurality of ridges extending inward from the sidewall surface. The ridges are positioned reflectively asymmetric relative to the mixing area in the jar. The ridges may improve blending consistency and uniformity, and may reduce blending time.