Helicopter rotor
US4714409A · kind A · utility
10Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1986 |
| Grant date | Dec 22, 1987 |
| Priority date | — |
| Expiry date | Oct 2, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/33
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A helicopter rotor includes a plurality of rotor blades attached to a rotor hub by flexure members adapted during operation to permit pitch changes and flap and lag movements of the rotor blades. Each flexure member comprises a plurality of longitudinally extending reinforcing plates which in cross section extend generally radially from a geometric center of the flexure member and are enclosed in a resilient matrix material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.