Fan propeller, in particular for motor vehicles
US8186957B2 · kind B2 · utility
2Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2007 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Mar 11, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/384
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The fan impeller (10) comprises a hub (14) and blades (12) extending radially outward from the hub, the blades having a flattened airfoil profile cross section with a leading edge (24) and a trailing edge (26) between which a chord is defined. The blade (12) has a relative thickness that reached its maximum value (Emax) in the first quarter of the length of the chord measured from the leading edge (24), the relative thickness being defined by the ratio between the thickness of the blade and the length of the chord. The invention finds an application particularly in motor vehicle engine cooling fan impellers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.