| 发明名称 |
Method and apparatus for manufacturing piston of internal combustion engine |
| 摘要 |
A piston is formed with a rib which is formed on a base portion and is formed with through holes which is formed in such manner that the core is in contact with a projection portions of a holding die.
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| 申请公布号 |
US5285840(A) |
申请公布日期 |
1994.02.15 |
| 申请号 |
US19920952349 |
申请日期 |
1992.09.28 |
| 申请人 |
AISIN SEIKI KABUSHIKI KAISHA |
发明人 |
HAYASHI, MASAMICHI;KAWABATA, YASUHIRO;MACHIDA, SHIRO;KAMIYA, TAKANORI |
| 分类号 |
B22C9/24;B22D17/00;B22D17/22;B22D19/00;F02F3/00;(IPC1-7):B22D19/02 |
主分类号 |
B22C9/24 |
| 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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