发明名称 |
Hollow metal object and method of its fabrication |
摘要 |
Manufacturing narrow-diameter hollow metal objects utilizing metals difficult to work plastically has been problematic with conventional manufacturing methods; the narrower the diameter the higher the manufacturing cost has been, and under some circumstances manufacturing has been impossible. A plurality of metal wires is worked into a twisted wire cluster, adjoining companion metal wires are brought into contact in planar contacting portions, and the cluster is made unitary by supplying an adhesive agent along the outer side, producing a hollow metal object possessing a uniform inner diameter and a clean inner surface. |
申请公布号 |
US6897399(B2) |
申请公布日期 |
2005.05.24 |
申请号 |
US20030248948 |
申请日期 |
2003.03.04 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
TSUDA AKIRA;NUMANO MASATADA;NAKAI YOSHIHIRO;NOMURA TSUYOSHI;KONDO TAKASHI |
分类号 |
B23H7/22;B21C37/04;B21C37/12;B21C37/15;B21F15/06;B21F15/08;B21F45/00;B23H1/04;B23H1/06;B23H7/24;B23H9/14;B23K1/00;B32B15/01;D07B1/12;D07B1/14;(IPC1-7):B23H1/04;F16L9/02 |
主分类号 |
B23H7/22 |
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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