Helicopter blade structure
US4120610A · kind A · utility
20Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 1974 |
| Grant date | Oct 17, 1978 |
| Priority date | — |
| Expiry date | May 16, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C2027/4736
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A helicopter main rotor blade having a metallic nose spar extending the length of the leading edge of the blade and a trailing edge skin attached to the nose spar. A closure channel fixed within the nose spar extends the length thereof with unidirectional fiberglass material fixed to and extending along the length of the closure channel. A bushing on the inboard end of the blade preferably is attached both to the nose spar and the fiberglass bands for transfer of centrifugal forces in the blade to a grip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.