Method and device for producing reinforcement elements formed of resistant fibers
US5350615A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1993 |
| Grant date | Sep 27, 1994 |
| Priority date | — |
| Expiry date | Apr 14, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/687
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and device are disclosed for forming reinforcement element formed of fibers distributed along three dimensions, wherein, a continuous fiber is introduced in a substrate resting on a support formed of such fibers crossed in at least two directions, by stitching, from the free face of said substrate opposite said support by means of a needle driven with a reciprocal movement, a relative movement being in addition generated between said support and said needle so that said continuous fiber is formed inside said substrate of a succession of consecutive segments forming a zig-zag line. The invention is remarkable in that: PA1 said needle is curved and imposes on each segment of said continuous fiber a similar curved form; and PA1 the reciprocal movement of said curved needle occurs while rotating about an axis perpendicular to the plane of said needle and disposed on the concave side thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.