Patent ID: 8205567

Claim:
A method of making at least one stiffener element, the method comprising the steps of: cutting out two substantially identical elongate flanks ( 2 , 4 ) from fiber plates, each flank presenting two lateral projections ( 10 , 14 ) on either side of a central portion ( 6 ); superposing the flanks ( 2 , 4 ) and stitching them together along two parallel lines ( 8 , 12 ) that mark the boundaries between the lateral projections and the central portions; and folding the lateral projections ( 10 , 14 ) along the lines of stitching to either side of the assembly as formed in this way in order to form flanges ( 22 , 24 ), wherein the central portions ( 6 ) of the flanks extend beyond the lateral projections in order to define at least at one free end ( 16 , 18 ) of the stiffener element.