Patent ID: 9580206
Date: 2017-02-28
CPC Classifications: B65D

Claim:
1. A base for a plastic bottle for beverages under an internal pressure, the base comprising: an annular heel which is integral with a side wall of the bottle and comprises a first contact area; and, an inwardly domed section that is surrounded by and integral with said heel, the inwardly domed section includes a plurality of reinforcing elements arranged in a star pattern for increasing a rigidity of the inwardly domed section to enable the plastic bottle to withstand internal pressures, wherein the plurality of reinforcing elements are comprised of outwardly domed areas of the inwardly domed section that have a rigid structure so as to withstand the internal pressure and are configured to resist an outward deflection of the base, wherein the base comprises at least one annular groove between the outwardly domed areas and the heel, wherein the inner circumferential edge and the outer circumferential edge of said annular groove are located radially outwardly beyond the outwardly domed area, wherein the inwardly domed section including the outwardly domed areas have essentially the same wall thickness, and wherein the outwardly domed areas are arranged in a spacing from one another in the circumferential direction, wherein the outwardly domed areas include a section parallel to the first contact area: wherein the outwardly domed areas comprise curved sections in the lateral and inward radial directions adjacent to the section that is parallel to the first contact area and surround a central inwardly domed area, and the outwardly domed areas surround the central inwardly domed area, and wherein the base comprises at least one further annular groove between the outwardly domed areas and the central inwardly domed area.