Reinforced stiffeners and method for making the same
US9981444B2 · kind B2 · utility
1Cited by
64References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2013 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Feb 10, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24182
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A composite stiffener is fabricated using preforms of laminated, unidirectional composite tape. The stiffener includes a void that is reinforced by a filler wrapped with a structural adhesive. The surfaces of the preforms surrounding the void include a layer of composite fabric which is bonded to the filler by the adhesive, thereby increasing the toughness of stiffeners around the void and improving pull-off strength of the stiffener.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.