Rotorcraft rotors having twistable blades
US7604460B2 · kind B2 · utility
2Cited by
13References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2006 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Oct 31, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/82
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rotorcraft rotor includes a hub , a first blade having a first twistable structure secured to the hub by a first bolt and a first ring or washer , a second blade having a second twistable structure secured to the hub by a second bolt and a second ring or washer. The rotor includes a stop structure for preventing each ring or washer from turning relative to the hub or relative to the corresponding twistable structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.