A hollow fiber reinforced structure having irregular cross-sections, curvatures, joints and twists is provided. A method of forming the structure includes placing fibrous material on the walls of an outer mold and placing a bladder internal to the fibrous material, which serves as an inner mold. When...http://www.google.es/patents/US4863771?utm_source=gb-gplus-sharePatente US4863771 - Hollow fiber reinforced structure and method of making same
Hollow fiber reinforced structure and method of making same
