Patent ID: 9505188
Filing Date: 2016-11-29
CPC Classification: B29C,B29D,B29L,F03D,F05B,Y02E,Y02P

Claim Text:
1. A method of fabricating a wind turbine blade tubular spar, wherein the tubular spar: (i) extends along a designated axis, and (ii) is made of a reinforced polymer material including: (A) a plurality of fibers arranged in at least two directions, and (B) a polymer matrix incorporating the fibers, the method comprising: (a) molding a cap and a web; (b) cross-linking at least part of at least one of: the molded cap and the molded web in a composite material; (c) molding a substantially L-shaped structure which: (i) at least partly incorporates the molded cap and the molded web, and (ii) includes two opposite flanges which are: (A) substantially parallel to each other, (B) substantially parallel to the molded cap, and (C) offset from each other; (d) cross-linking the substantially L-shaped structure in the composite material; (e) repeating (a) to (d) for another substantially L-shaped structure; and (f) joining the two substantially L-shaped structures with the flanges positioned facing in pairs.