Rib of composite material and method of forming the same
US6114012A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1998 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Mar 6, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24694
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A rib of a composite material for a box structure such as an airfoil has, in an integral structure, a web and flanges formed so as to extend along opposite longitudinal side edges of the web. The web is provided with a plurality of parallel first ridges or beads formed so as to extend across the web and to protrude outward from the outer surface of the web, and each of the flanges is provided with a plurality of parallel second ridges formed so as to extend across the flange, to protrude inward from the outer surface thereof and to merge into the corresponding first ridges. The structure eliminates causes of wrinkles and provides an increased strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.