Patent ID: 8794462

Claim:
A base of a container formed by blow molding and comprising in an initial as-blown configuration: a standing surface; a first wall; a first hinge having a first diameter to define a fixed axis of rotation positioned between said standing surface and said first wall, said first wall being selectively rotatable about said first hinge relative to a longitudinal axis of the container between a first configuration extending away from an interior of the container and a second configuration extending toward the interior of the container; a second wall; and a second hinge having a second diameter positioned between said first wall and said second wall, the second hinge being concentric with and a fixed distance from the first hinge, said second wall being selectively rotatable about said second hinge relative to the longitudinal axis of the container between a first configuration extending away from an interior of the container and a second configuration extending toward the interior of the container, the second diameter being retained during selective rotation of the second wall about the second hinge.