Patent ID: 7696634

Claim:
A power generator for extracting power from fluid motion, said power generator having a structure adapted to be disposed in a flowing fluid which comprises, in combination: a. a plurality of restraining components; b. a plurality of fronds for converting fluid motion into power, each of said fronds having a longitudinal axis, being made of a flexible sheet material and being attached to at least one of said restraining components to maintain said material in a deformed state under continuous internal stress by securing different sections of said fronds, said material being configured in the deformed state so as to create wave-shaped undulations in the respective frond, such that, when the fronds are subjected to the forces of a moving fluid directed along their longitudinal axes, the positions of the undulations in said fronds move in unison and in the direction of the moving fluid; and c. a device for extracting power from undulations of said fronds.