Container having a preshaped end closure
US6829874B2 · kind B2 · utility
1Cited by
23References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2002 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Sep 14, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2543/00796
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tubular container for vacuum packaging products is provided according to the present invention that includes an overcap secured to at least one of the opposed ends of a tubular container that defines a bias member for biasing a membrane-type flexible lid inwardly towards products contained within the tubular container before a vacuum is applied. The flexible lid is maintained in a biased shape until the bias member is removed. As such, the flexible lid is sufficiently restrained during the vacuum packaging process, thus preventing the breakage of products located adjacent the flexible lid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.