Patent ID: 8801362

Claim:
A fluid turbine comprising: a shroud formed from at least one shroud segment having a leading edge, a trailing edge, an interior surface, and an exterior surface, the at least one shroud segment including a hard shell member and a membrane; wherein the leading edge, the trailing edge, and the interior surface of the shroud segment are formed from the hard shell member, the hard shell member including: an arcuate front edge having a first end and a second end; a rear edge including: a first outer edge and a second outer edge located in an outer plane; an inner edge located in an inner plane and located between the first and second outer edges; a first radial edge extending from a first end of the inner edge to an interior end of the first outer edge; and a second radial edge extending from a second end of the inner edge to an interior end of the second outer edge; an interior face extending from the front edge to the rear edge; a front lip on the arcuate front edge transverse to the interior face; and a rear lip on the rear edge transverse to the interior face; and wherein the exterior surface of the shroud segment is formed from the membrane.