Patent ID: 8109397

Claim:
A container, comprising: a mouth; a wall section which adjoins the mouth in a longitudinal direction of the container; and a base section, wherein the wall section merges into the base section and the container is formed in one piece, the base section comprising: an injection point located in an interior region of the base section; a central region which surrounds the injection point in a radial direction with respect to the longitudinal direction; a plurality of curved outer ridges which extend from the central region to the wall section, and have a non-zero curvature continuously therebetween, said curved outer ridges each having a point of inflection, wherein a portion of each curved outer ridge between said central region and said point of inflection comprises a continuously changing curvature; and a plurality of depressed regions which extend from the central region to the wall section and which are disposed between ones of said plurality of curved outer ridges, each of said depressed regions having a constant radius of curvature in at least one respective radial direction of the container.