Abstract: A process for inserting points (38) on a mandrel (36) and a machine for performing this process. A working head (40) simultaneously ensures the insertion of a point and the making of a perforation (112) in the mandrel by means of a punch (94). The perforation is made in the same longitudinal row as the inserted point and towards the front with respect to the latter, in such a way that it is subsequently possible to guide a point following a rotation of one or more turns of the mandrel. The invention is applicable to the production of members or bodies of revolution made from three-dimensional material.

Abstract: A machine for the manufacture of rotational parts in a three-dimensional material is disclosed. A mandrel provided with rows of barbs is rotatably carried by the machine, whereby superimposed layers of threads are successively deposited in the longitudinal and circumferential corridors defined between the barbs. The machine additionally comprises a retractable member adapted to hold in place one extremity of a weft thread when the latter does not extend outside of the corresponding corridor, and a winding system which positions a holding thread in a circumferential corridor near the extremities of the weft threads to hold them in place when the retractable member has been retracted.

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.

Abstract: Filiform textile material which can be used for producing a textile material used in the manufacture of laminated articles or which can be given a coating, constituted by a plurality of resin-preimpregnated continuous chemical filaments, wherein it is formed by at least one assembly having a plurality of non-polymerized or partly polymerized, resin-preimpregnated individual filaments covered by at least one layer of wrapping textile material which is not impregnated with resin.

Abstract: The method consists in realizing densified layers of fibers, in forming a stack with said layers of fibers provided with holes and so arranged that the fibers of the layers extend within the stack in at least two directions designated as first and second directions which define the plane of the layers and that the holes form passages within the stack in a third direction, in implanting in said passages fibers which extend in the third direction, and in increasing the density of the assembly, for example by filling the gaps of the structure with a resin or a carbon matrix.

Abstract: This invention relates to a body of three-dimensional fabric, a method of producing such bodies or parts of various shapes from three-dimensional fabric and also relates to apparatus for industrial performance of this method.