发明名称 |
Forced air cooling fan having pivotal fan blades for unidirectional air flow |
摘要 |
The forced air cooling fan comprises a flat disk surface having a series of circumferentially spaced apertures each including a V-shaped fan blade connected across the aperture perpendicular to the periphery of the disk-shaped surface. The V-shaped fan blade includes a pivoting device having a first blade member of one side and a second blade member of the opposing side of the pivoting device. In one position of the V-shaped fan blade, the first blade member covers a first portion of the aperture and the second blade members directs the flow of air downwardly through a second portion of the aperture. V-shaped fan blades allow the direction of the forced air to remain relatively constant when the rotational direction of the drive mechanism is reversed.
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申请公布号 |
US2003223867(A1) |
申请公布日期 |
2003.12.04 |
申请号 |
US20020159840 |
申请日期 |
2002.05.31 |
申请人 |
ZWEIGHAFT JAMES;TURNER PHILIP JOHN |
发明人 |
ZWEIGHAFT JAMES;TURNER PHILIP JOHN |
分类号 |
F04D29/36;F04D29/38;(IPC1-7):F04D29/38 |
主分类号 |
F04D29/36 |
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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