发明名称 |
METHOD OF MANUFACTURE |
摘要 |
In a method of manufacturing a member having a cross-sectional area which varies along its length, the member is produced by filling a cavity 6 in a die 5 with powdered material and compressing it. The die includes portions 8, 9 and 10 at different heights around the opening 7 so as to enable the amount of powdered present in the cavity to be varied along its length without compromising the shape of the final item to be manufactured.
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申请公布号 |
US5122311(A) |
申请公布日期 |
1992.06.16 |
申请号 |
US19910748932 |
申请日期 |
1991.08.23 |
申请人 |
MARCONI ELECTRONIC DEVICES LIMITED |
发明人 |
SIMS, ROBERT F.;LYONS, KEITH B. |
分类号 |
B22F3/02;B29C43/00;B29C43/36;B30B11/00;B30B11/02;B30B11/04 |
主分类号 |
B22F3/02 |
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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