Fan blade with bends forming general blade curvature
US4177012A · kind A · utility
14Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1978 |
| Grant date | Dec 4, 1979 |
| Priority date | — |
| Expiry date | Mar 15, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S416/03
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An automotive cooling fan having flexible, resilient blades which decamber with increasing rotational speed of the fan, the general curvature of the blades being formed by a multiplicity of spaced, generally radially extending bends in the blades; in preferred embodiments the blades have configuration resulting from said bends in which the general radius of blade curvature of the blades increases and the chord angle of the blades decreases from the blade roots to the blade tips.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.