High efficiency cooling fan
US8337154B2 · kind B2 · utility
14Cited by
15References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2008 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Jul 25, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D25/0606
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cooling fan includes an impeller which comprises a plurality of radially extending blades, each of which includes a blade hub, a blade tip and a blade midspan approximately midway between the hub and the tip. In addition, each blade includes a camber of between about 60° and 90° at the blade hub, between about 15° and 40° at the blade midspan and between about 15° and 40° at the blade tip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.