Patent ID: 7464546

Claim:
A water-powered generator comprising: a. a first enclosed vessel, having a top, a bottom, and an encircling vertical wall, a portion of said first vessel filled with a fluid; b. a first variable density body, situated within said first vessel, said first variable density body movable up and down within said encircling vertical wall between a first position proximal said bottom of said first vessel, and a second position distal said bottom of said first vessel, said first variable density body configured to be changeable in total density between a first density where said first variable density body has a higher total density than said fluid and a second density where said first variable density body has a lower total density than said fluid; c. a means for changing said total density of said first variable density body from said first density to said second density; and d. a magnet attached to said first variable density body; and e. an inductive coil surrounding at least a portion of said encircling vertical wall, said magnet and said inductive coil being positioned such that said up and down motion of said variable density body will cause said magnet to move within said inductive coil.