Container base structure responsive to vacuum related forces
US6595380B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2001 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Jul 19, 2021 |
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 absorption. The base portion including a ring upon which the container is supported, an upstanding wall and a recessed portion. The upstanding wall being adjacent to and generally circumscribing the contact ring. The recessed portion being defined in at least part by a flat base region and a central base region. The flat base region extending from the upstanding wall toward a longitudinal axis of the container. The flat base region defining a projected surface area of at least 45% of a total projected surface area of the container. The flat base region being moveable to accommodate vacuum forces within said container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.