Forced air cooling fan having pivotal fan blades for unidirectional air flow
US6699013B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2002 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | May 31, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/911
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.