Process and machine for manufacturing pieces of revolution made of three-dimensional material of which the generatrix has at least one concave part
US4354888A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 9, 1981 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Apr 9, 2001 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H3/073
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a process for manufacturing pieces of revolution made of three-dimensional material, of which the generatrix has at least one concave part, said process consisting in making a support mandrel provided with rows of pins defining therebetween longitudinal corridors and circumferential corridors, in disposing superposed layers of yarns in said corridors by winding and by filling, in densifying the assembly thus obtained, and, finally, in eliminating the support mandrel, wherein the longitudinal yarns are deposited in corresponding corridors and these yarns are maintained in the corridors at the level of said concave part. The invention also relates to a machine for carrying out this process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.