发明名称 |
Method for manufacturing an air gap insulated exhaust pipe junction |
摘要 |
<p>The manufacturing method has an inner pipe for exhaust gases fitted inside an outer pipe, with an air insulation gap between the inner and outer pipes. A common branch point is formed in the double-walled pipe using two internal pressure deforming tools, successively providing a double-walled pipe opening and sealing the edge of the outer pipe opening around the outside of the inner pipe opening.</p> |
申请公布号 |
EP0919704(B1) |
申请公布日期 |
2002.04.03 |
申请号 |
EP19980120557 |
申请日期 |
1998.10.30 |
申请人 |
DAIMLERCHRYSLER AG |
发明人 |
BONNY, PIERRE;HUELSBERG, THOMAS |
分类号 |
B21D26/02;B21D26/035;B21D26/037;B21D26/045;B21D26/051;F01N13/14;F01N13/18;(IPC1-7):F01N7/14 |
主分类号 |
B21D26/02 |
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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