Fiber architecture for Pi-preforms
US7712488B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2008 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Jul 5, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3203
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A woven preform for a reinforces composite material, which may be woven flat and folded into a shape. The preform has a three-dimensional weave architecture with fill fibers woven to provide layer-to-layer interlocking of layers of warp fiber as well as interlocking of fibers within each layer. At least two legs extend from a base, the base and legs each having at least two layers of warp fibers. The legs can be connected at a symmetrical or asymmetrical, distributed-column intersection, with an even or odd number of columns of warp fibers being located between the legs. The outer ends of the base and/or legs preferably have tapers formed from terminating layers of warp fibers in a stepped pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.