Patent ID: 7802412

Claim:
A windmill comprising: a number of cylindrical or tapered tower sections which are configured to support the windmill, at least some of the tower sections being subdivided into two or more associated elongated shell segments, which associated shell segments are adapted to combine into a complete tower section, inwardly-extending vertical flanges provided on each of the associated shell segments which vertical flanges are connected together to form an associated complete tower section, wherein the vertical flanges are welded onto the shell segments offset from the side edges of the respective shell segments such that a space is provided between opposing surfaces of adjacent vertical flanges, wherein a spacer bar is sandwiched between the adjacent vertical flanges, and wherein the adjacent vertical flanges with the spacer bar therebetween are bolted together, and inwardly-extending upper and lower horizontal flanges provided, respectively, on said associated shell segments for interconnection of the tower sections one on top of the other to support the windmill.