Patent ID: 7546932

Claim:
A container comprising: an open top defined by an annular rim; a base defining a lowermost surface of the container; and a sidewall extending between the top and the base, the sidewall having an inner surface and an outer surface, the sidewall comprising a recess and an annular shoulder located between the recess and the base, the annular shoulder comprising an arched portion, the annular shoulder forming an inner stacking surface on the inner surface of the sidewall and the arched portion forming a raised ledge on the inner stacking surface, wherein a predominant portion of the inner stacking surface lies in a single horizontal plane, the sidewall being configured such that a base of a second identical container is configured to rest upon the inner stacking surface and the raised ledge is configured to sit within an arched portion of the second identical container when the second identical container is nested upon the container.