Fan having a blade structure for reducing noise
US5393199A · kind A · utility
24Cited by
14References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1992 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Jul 22, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S416/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fan comprises a hub rotatable about a central axis and a plurality of blades each having a root region secured to the hub and extending radially outwardly to a tip region. Each blade is designed with particular characteristics to reduce noise without affecting the performance of the fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.