发明名称 |
Method of manufacturing rims for motor vehicles |
摘要 |
A process of manufacturing a rim for a motor vehicle from an original pipe, in order to facilitate formation of projections for reducing road noise on the rim, comprises a projection forming step of partially extruding a ledge portion of an intermediate pipe for the rim from inside to outside in a radial direction of the ledge portion so as to form a plurality of projections at suitable intervals.
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申请公布号 |
US6935024(B2) |
申请公布日期 |
2005.08.30 |
申请号 |
US20030387568 |
申请日期 |
2003.03.14 |
申请人 |
CENTRAL MOTOR WHEEL CO., LTD. |
发明人 |
SHIMIZU KIICHI |
分类号 |
B21K1/28;B21K1/38;(IPC1-7):B21K1/38 |
主分类号 |
B21K1/28 |
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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