Falciform blade for a propeller and its application in particular in motorized fans for automobiles
US4871298A · kind A · utility
10Cited by
9References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1988 |
| Grant date | Oct 3, 1989 |
| Priority date | — |
| Expiry date | Jul 8, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/384
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The blade (10) for a propeller constituted by a hub (20) to which the feet (12) are fixed has a leading edge (14) and a trailing edge (15) which is formed by two arcs (152, 153) having respective mean radii of curvature (.rho.2, .rho.3) which are different and interconnected without an angular point. These edges are both curved in the downstream direction and define a blade which narrows from the axis to the periphery of the propeller. Application in propellers of motorized fans associated with automobile vehicles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.