Container base structure responsive to vacuum related forces
US7451886B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2005 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Oct 14, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D79/0081
- WIPO fieldHandling
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.