Process for manufacturing composite reinforcement elements woven in three dimensions
US4863660A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1988 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Mar 23, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24124
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A plurality of parallel layers of fibers are laid in two crossed directions on a disposable support mandrel, pins are temprorarily implanted in the mandrel (15) composed of foam material in regions of evolution of its shape and at points where it is desired to change the direction of the fiber, a continuous thread (33) is stretched out between the pins so as to form crossed superimposed layers, and a continuous fiber (50) is introduced by means of a needle (43) through the layers and forms successive open loops (53). The loops (53) are maintained by the elastic pressure exerted by the foam material and the gripping action of said layers. The fibers are impregnated with a binder and the binder is hardened and the mandrel is destroyed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.