Openable can body
US4712960A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1986 |
| Grant date | Dec 15, 1987 |
| Priority date | — |
| Expiry date | Jul 14, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D17/464
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A can body is rolled from a sheet-metal blank (28) and has outer and inner longitudinal edges (12 and 14 respectively) which are welded to one another in an overlapping manner. Extending round the can body transversely to the longitudinal edges (12, 14) are two circumferential scorings (16) which define a tearing strip (18) laterally. The tearing strip (18) is extended by a tongue (20) which is welded onto the outer longitudinal edge (12) and which can be gripped by a key and rolled up. In a welding zone (42) which is adjacent to a starting scoring (30), the tearing strip (18) is stiffened by the welded-on tongue (20) in such a manner that it tears away from the can body reliably along the circumferential scorings (16) during the rolling up of the tongue (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.