Abstract: A Styrofoam-filled plastic cylinder that has collapsible paddle wheel fins attached about the circumference. Two shafts extend from the ends of the cylinder. The shafts are held by bearings. The bearings are attached to a frame structure that is embedded into the seabed. The shafts then extend past the bearings and are connected to a gear drive system that, in turn, connected to generators or other mechanical devices. When installed in the sea, the cylinder will turn in the swells/tidal action for as long as the ocean produces waves. Platforms on either side of the cylinder rise and fall with tidal action to maintain effective contact with the water at all times. Moreover, because the structure is positioned at or near the water surface, maintenance is much simpler for this device.

Abstract: A “wave mill” that is adapted from modern windmill designs. The wave mill has a long vertical shaft, positioned in the sea and secured to the seabed. The mill has a number of long blades (arms) that have hinged fins attached. The number of these fins depends upon the change in tides. Adding more fins ensures that the mill will operate at all tidal levels in a given area. The wave mill does operate with the wind. Therefore, it does not rotate to follow changing wind conditions. Several arms are needed for maximum generation efficiency. To provide stability for the structure, supports are placed on the sides of the structure. The structures use large rings to brace the arms against strong crosswinds. The arms are connected at a central hub, which has shafts extending from both sides. The shafts connect to bearings and to a generator.