US Patent 7819160 Device for using fibers with flexible fiber-routing tubes

A fiber application machine, for making components out of composite materials, that includes a system for displacing a fiber application head, fiber storage means, and fiber conveying means for conveying fibers from said storage means to the application head. The conveying means include flexible tubes connecting the storage means to the application head, each flexible tube being fitted with at least one longitudinal flexible blade of rectangular transverse cross-section, said flexible blade being placed substantially parallel to the plane of transport of the fiber received in the inner passage of the flexible tube.