| 发明名称 |
INTEGRAL DUCTWORK DIFFUSER |
| 摘要 |
Apparatus (20) and a corresponding method for forming from a strip of sheet metal stock material (22) a length of spiral duct (26) that includes an integral diffuser (28). A perforator (30) forms perforations (52) in the strip (22) at at least selected intervals. A machine (34) forms the strip, after performation, into spiral seamed duct (26).
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| 申请公布号 |
WO0245875(A1) |
申请公布日期 |
2002.06.13 |
| 申请号 |
WO2001US46427 |
申请日期 |
2001.12.07 |
| 申请人 |
OVALFORMER LLC |
发明人 |
PRICE, MILLER, S.;FRONING, MARK, A.;MOYERS, GREGORY, C. |
| 分类号 |
B21C37/12;F16L9/16;F24F13/02;F24F13/06;(IPC1-7):B21C37/12;F16L9/02 |
主分类号 |
B21C37/12 |
| 代理机构 |
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代理人 |
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| 主权项 |
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