PT closing device for containers
US7946438B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2005 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Aug 22, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2543/00962
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention is directed to a closing device for a closure lid made of sheet metal suitable for opening by twisting, as well as a support device on or for such closure lid, as well as the closure lid itself and a process of making such closure lid. The closing device includes a lid panel; a skirt portion on an edge of the lid panel; a seal extending from a circumferential section of the lid panel into the skirt portion. In addition, the closing device has a non-metallic safety ring that includes two circumferentially extending sections, configured as a safety section with a strip section, shaped to project radially inwards and axially upwards, as well as a connecting section for attaching the safety section on an axially lower end of the skirt portion. The skirt portion has a lower end rolled up from radial outside to radial inside by more than 180° to form a roll-up portion, the roll-up portion being at least partly clasped, or is claspable, by the connecting section from an inner side of the skirt portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.