Method for making fibrous preforms for producing annular parts from a composite material
US6009605A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1998 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | May 22, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D69/026
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Fiber preforms for use in the manufacture of composite material annular ps are made by winding superposed layers of a strip of cloth (10) of spiral or helical shape comprising substantially helical warp threads and substantially radial weft threads. The mass per unit area of the warp of the helical cloth increases between its inside diameter and its outside diameter, and the layers of the strip of cloth are needled so as to be bonded together by fibers pulled from the yarn of the cloth, the increase in mass per unit area of the warp at least approximately compensating, in terms of density per unit volume of the preform, the decrease in density of the weft between the inside diameter and the outside diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.