Blade for reducing the drag movements of said blade, and a method of reducing such a drag movement
US8297928B2 · kind B2 · utility
4Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2009 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Feb 18, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A blade (10) extending longitudinally from a root (11) of the blade (10) to a free end (12) of the blade (10), the blade (10) having a resonator (13) incorporated therein to reduce the drag movements (F1, F2) of the blade (10), the resonator (13) being provided with a solid and movable heavy element (30) and with resilient retaining element (20) secured to the heavy element (30) and to the blade (10). Furthermore, the resonator (13) includes guide element (40) in which the heavy element (30) is capable of oscillating (F1′, F2′) longitudinally, the guide element (40) being arranged in a longitudinal direction (D1) of the blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.