Abstract: A process for inserting points (38) in 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.
Type:
Grant
Filed:
March 9, 1984
Date of Patent:
August 27, 1985
Assignees:
Commissariat a l'Energie Atomique, Societe J. Brochier & Fils
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.
Type:
Grant
Filed:
December 2, 1981
Date of Patent:
March 20, 1984
Assignees:
Commissariat a l'Energie Atomiqe, Societe J. Brochier & Fils
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.
Type:
Grant
Filed:
April 9, 1981
Date of Patent:
October 19, 1982
Assignees:
Commissariat a l'Energie Atomique, Societe J. Brochier & Fils.
Abstract: A fabric comprising warp and woof (weft) has dense and strong boron fibers and boron-compound fibers constituting the weft and utilizes an open warp having a supportive function for the boron weft thereby obtaining high strength in the weft direction.
Type:
Grant
Filed:
March 27, 1975
Date of Patent:
December 14, 1976
Assignees:
J. Brochier & Fils, Avions Marcel Dassault-Breguet Aviation, Societe Anonyme Francaise ayant son siege Social