Container base structure responsive to vacuum related forces

Bottles and jars – End wall structure – One-piece side and end wall

Reexamination Certificate

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Details

C215S371000, C220S606000, C220S609000

Reexamination Certificate

active

07451886

ABSTRACT:
A plastic container having a base portion adapted for vacuum pressure absorption. The base portion including a contact ring that supports the container, an upstanding wall, and a central portion. The upstanding wall being adjacent to and generally circumscribing the contact ring. The central portion defined in at least part by a pushup and an inversion ring that generally circumscribes the pushup. The pushup having a generally truncated cone shape in cross section and the inversion ring having a generally S shaped geometry in cross section. The pushup and the inversion ring being moveable to accommodate vacuum related forces generated within the container.

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