Flexbeam
US6739834B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2002 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Nov 26, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/33
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A flexbeam having a flapping part and a feathering and lead-lag part has a first composite member having a plurality of first layers and a plurality of second layers; and a second composite member having a plurality of loop members; wherein the flapping part is constructed such that the first layers of the first composite member and the second composite members arranged on the leading edge side and the trailing edge side of the beam, are jointed integrally and also the second composite members are separated by the second layers of the first composite member in a vertical direction and are jointed to the second layers, and the feathering and lead-lag part is constructed by jointing integrally the second layers of the first composite member arranged in a center of thickness, and the second composite members arranged on upper and lower surfaces of the second layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.