发明名称 |
Method of making roller units |
摘要 |
A roller unit for use as a caster for luggage, for example, has a sturdy one-piece roller housing formed of sheet metal, the housing comprising a rectangular base with raised pads at opposite ends thereof and a roller-receiving shell defined by a pair of opposed U-shaped walls bent from opposite longitudinal edge regions of the base between the pads. Roller units are manufactured seriatim by metal forming operations that do not require deep-drawing.
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申请公布号 |
US4024622(A) |
申请公布日期 |
1977.05.24 |
申请号 |
US19760707677 |
申请日期 |
1976.07.22 |
申请人 |
PRESTO LOCK COMPANY, DIVISION OF WALTER KIDDE & COMPANY, INC. |
发明人 |
FEINBERG, IRVING;FRIEDRICH, CARL |
分类号 |
B21D53/26;B60B33/00;(IPC1-7):B21D51/16;B23P17/02 |
主分类号 |
B21D53/26 |
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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