Patent ID: 7686583

Claim:
A wave energy conversion system comprising: a cyclical propeller including: a main shaft; a first base attached to rotate with the main shaft; a set of one or more blades, each of the blades being located at an offset from the main shaft; a first set of rotation systems that respectively attach first ends of the blades to the first base, wherein each of the rotation systems is capable of rotating a corresponding one of the blades about an axis of the blade to control a blade angle of the blade; a second base; and a second set of rotation systems that respectively attach second ends of the blades to the second base; and a sensor system sensing a property of water in which waves propagate; and a control system operably coupled to the sensor system and the first and second sets of rotation systems, wherein the control system controls pitching cycles of the blades and controls the first and second sets of rotation systems to independently twist each of the blades.