Patent ID: 8225956

Claim:
A container for mixing liquids, the container comprising: a base having a first diameter and comprising an interior surface and an exterior surface; a lower portion formed of a first material, the lower portion comprising a proximate edge coupled to the base and a distal edge, the lower portion having an interior surface and an exterior surface; a middle portion formed of a second material, the middle portion comprising a proximate edge coupled to the distal edge of the lower portion and a distal edge, the middle portion having an interior surface and an exterior surface; a top portion formed of a third material, the top portion comprising a proximate edge coupled to the distal edge of the middle portion and a distal edge that defines an opening opposite the base, the top portion having an interior surface and an exterior surface; a post extending from the interior surface of the base, the post having a second diameter and a tip, the tip being disposed between the distal and proximate edges of the middle portion; and a movable ring circumscribing the post, the ring being configured to move between at least the base and the tip of the post.