Fiber reinforced composite structure having stepped surface
US9056448B2 · kind B2 · utility
2Cited by
42References
10Claims
0Family size
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Key dates
| Filing date | Apr 24, 2013 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Sep 8, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24628
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Fiber reinforced composite structures having curved stepped surfaces are fabricated by laying up plies of fiber reinforced material over a tool having a stepped tool feature. The plies are rotated about a fixed axis as they are laid up to substantially form a fixed axis rosette pattern. The plies are angularly oriented such that at least certain of the plies have fiber orientations other than 0, +45, −45 and 90 degrees. Potential bridging of the fibers over the stepped tool features is reduced or eliminated by cutting slits in the plies in the area of the stepped features, so that the plies can be fully compacted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.