| 发明名称 |
Through flow hollow body or sandwich element production process, involving use of magnetized spacers to leave through passage |
| 摘要 |
The through flow element production process involves the use of spacers (6) to maintain a spacing (7) to provide a through passage (5). The spacers and the cover parts are fixed by the inherent magnetic force of the spacers, or by magnetizing them. There may be two cover parts (2, 3) arranged to form a sandwich.
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| 申请公布号 |
DE19909381(A1) |
申请公布日期 |
2000.09.07 |
| 申请号 |
DE19991009381 |
申请日期 |
1999.03.04 |
| 申请人 |
D.D.C. PLANUNGS-, ENTWICKLUNGS- UND MANAGEMENT AG |
发明人 |
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| 分类号 |
B21D53/04;E04D3/36;E04D13/18;F28F3/12;(IPC1-7):B23P13/00;B23P15/26;B21D5/08 |
主分类号 |
B21D53/04 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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