Method of fabricating composite elements knitted in three dimensions
US4779429A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1987 |
| Grant date | Oct 25, 1988 |
| Priority date | — |
| Expiry date | Apr 9, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/003
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This section element has a cross-sectional shape with reentrant or inside angles and/or concave parts or a hollow polygonal or other shape. A plurality of parallel threads are held taut and maintained in the longitudinal direction of the section element in a configuration which corresponds to the cross-sectional shape of the desired section element. These longitudinal threads are progressively displaced continuously in front of a group of knitting heads knitting in two dimensions which are orthogonal and perpendicular to said longitudinal threads. Each knitting head comprises a plurality of series of needles I, L1, L2, LA, A1 and A1' each of which covers a specific portion of the cross section of the section element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.