Patent ID: 8534510

Claim:
A container comprising: a container neck forming an opening about an axis, the container neck comprising a rim surface that defines a seating plane; a closure body comprising: a top wall extending radially from the axis; a plug extending axially from the top wall, the plug circumferentially surrounding the axis; a sidewall extending axially from the top wall and circumferentially surrounding the plug so as to form an annular space between the sidewall and the plug; a bottom surface of the top wall defining a roof of the annular space, the bottom surface of the top wall being non-coplanar with a reference plane that is substantially parallel to the seating plane; and a plurality of circumferentially spaced-apart struts in the annular space, each of the struts having a bottom surface that collectively define the reference plane, wherein the bottom surface of the top wall has an undulating contour extending circumferentially, wherein the top wall comprises a top surface having an undulating contour that follows the undulating contour of the bottom surface, the top surface having a convex cross-sectional profile viewed along a first plane that includes the axis, and the top surface of the top wall having a concave cross-sectional profile viewed along a second plane that includes the axis, the first and second planes being substantially orthogonal to one another; the closure body secured to the container neck, the container neck extending into the annular space so that the rim surface of the container neck contacts the bottom surfaces of the struts, the plug extending into the opening of the container neck and forming a seal with the container neck; and wherein each of the struts is attached to an exterior axial surface of the plug, an interior axial surface of the sidewall, and the bottom surface of the top wall, each of the struts have a height measured from the bottom surface of the top wall to the bottom surface of the strut, and the closure body comprises struts having at least two different heights.