Patent ID: 8777033

Claim:
A plastic container and closure combination comprising: a container comprising: a solid bottom end; an outer sidewall extending from the solid bottom end; a shoulder portion extending from the outer sidewall; and a neck portion extending from the shoulder portion to create an open end of the container, the neck portion having a diameter less than a diameter of the outer sidewall; and a closure comprising: a sealing portion including an outer portion and an inner portion, the sealing portion defining a perimeter of the closure; and a flexible planar center area in a center of the closure; wherein the solid bottom end includes a circumferential heel portion having a plurality of radially asymmetrical projections and recesses disposed on an outer periphery of the heel portion, each radially asymmetrical projection having a pair of tapered side surfaces extending from a bearing surface, each projection having a corresponding radially asymmetrical projection aligned along a chord, and wherein for each projection, a side surface of the pair of tapered side surfaces is aligned along the chord with a side surface of the pair of tapered side surfaces of the corresponding radially asymmetrical projection; and; wherein the container defines a container central axis, and the shoulder portion forms a shoulder angle with a plane perpendicular to the container central axis; and wherein the shoulder angle is in the range of 30 to 75 degrees.