Pi-preform with variable width clevis
US8127802B2 · kind B2 · utility
8Cited by
39References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2008 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Jan 20, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3195
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A woven preform for a reinforced composite material, which may be woven flat and folded into 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 may be parallel or angled to each other, or may have a variable width clevis in between. The outer ends of the base and/or the 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.