Container and end closure adapted for evacuating and back-flushing of gases during closing
US5788112A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 1996 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | May 8, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D51/1694
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A container and end adapted for closing and sealing the container with a double-seaming operation is provided which permits evacuating and back-flushing of gases out of and into the container while the end is in a seated and unseamed position on the container during the closing operation. The end includes a central circular panel, a chuck wall surrounding an outer periphery of the central panel and extending radially outwardly and upwardly from the central panel and a crown seaming panel surrounding the chuck wall and extending radially outwardly from the chuck wall and having an outer curled end for being double-seamed with a flanged upper end portion of the container for closing of the container. The end preferably includes sealing compound positioned on an inside surface of the chuck wall and the crown seaming panel. Separate projections are formed in the chuck wall and in the crown seaming panel of the end and extend inwardly and radially of the chuck wall and crown seaming panel, respectively, and are spaced around the chuck wall and the crown seaming panel for engaging the flanged upper end of the container being closed for forming gas channels between the respective projecti…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.