High efficiency ceiling fan
US7131819B2 · kind B2 · utility
5Cited by
9References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 7, 2006 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Jan 7, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T70/50
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Ceiling fan energy consumption efficiency is enhanced with fan blades that have an angle attack that decreases from root end to tip end at higher rates of decrease nearer their tip ends than at their root ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.