发明授权
- 专利标题: Openable can body
- 专利标题(中): 可开罐体
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申请号: US754340申请日: 1985-07-11
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公开(公告)号: US4637521A公开(公告)日: 1987-01-20
- 发明人: Paul Opprecht , Werner Urech , Jurg Opprecht
- 申请人: Paul Opprecht , Werner Urech , Jurg Opprecht
- 申请人地址: CHX
- 专利权人: Elpatronic AG
- 当前专利权人: Elpatronic AG
- 当前专利权人地址: CHX
- 优先权: CHX3404/84 19840712
- 主分类号: B21D51/44
- IPC分类号: B21D51/44 ; B21D51/26 ; B21D51/38 ; B23K11/00 ; B23K31/00 ; B65D17/36 ; B65D17/38 ; B65D17/40
摘要:
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).
公开/授权文献
- US5914086A Method of manufacturing structured mouldings 公开/授权日:1999-06-22