Composite structure in the form of a disc of knitted carbon fibers
US4341830A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1980 |
| Grant date | Jul 27, 1982 |
| Priority date | — |
| Expiry date | Jan 11, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A composite structure such as an aircraft brake disc has a matrix material reinforced by knitted panels of fabric arranged in a stack. The panels are knitted directly into the desired disc shape so that there is no fabric waste, by knitting a helix of fabric on a flat-bed weft knitting machine having a patterning mechanism which allows shaping and a presser foot or sinkers to hold the knitting down on the needles. The helix of fabric can be closed down to constitute the stack of disc panels directly or it can be separated into discrete disc panels by knitting in draw threads connecting successive windings of the helix. The disc panels may be knitted from oxidised acrylic yarn and then heated to carbonise the yarn. A stack of carbon fibre fabric panels may be embedded in a carbon matrix by carbon vapor deposition to form a brake disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.