Container base structure responsive to vacuum related forces
US6942116B2 · kind B2 · utility
99Cited by
17References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2003 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Jun 17, 2023 |
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 upon which the container is supported, an upstanding wall and a central portion. The upstanding wall being adjacent to and generally circumscribing the contact ring. The central portion being defined in at least part by a central pushup and an inversion ring which generally circumscribes the central pushup. The central pushup and the inversion ring being moveable to accommodate vacuum forces generated within the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.