| 发明名称 |
HEM FORMATION |
| 摘要 |
Hems are formed on the edges of sheet metal objects by forcing the edge of the objects against a concavely curved forming element. This is done in a press which applies force in the plane of the sheet metal while supporting its sides against buckling.
|
| 申请公布号 |
US3685338(A) |
申请公布日期 |
1972.08.22 |
| 申请号 |
USD3685338 |
申请日期 |
1970.04.24 |
| 申请人 |
FREDERICK A. KRAUSE ASSOCIATES INC. |
发明人 |
BERNARD L. HOFFMAN |
| 分类号 |
B21D19/12;B21D51/44;(IPC1-7):B21D19/12 |
主分类号 |
B21D19/12 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
