Abstract: An apparatus is disclosed for an improved float type wave powered pump that uses the continuous rising and falling wave action in a body of water to pump a fluid. The pump includes piston and cylinder assemblies that are configured for relative reciprocal movement therebetween. One of the assemblies is anchored to the floor of the body of water and the other is vertically moveable in response to a drive float riding on a wave. The pump selectively includes a tide compensating device to reduce the ratio of vertical travel of the drive float to vertical travel of the moveable assembly. The pump also selectively includes a fluid inlet check valve incorporating a support plate of the piston assembly with openings therein and a cover for the same. The pump further selectively includes a directional pressure-activated seal at the point of sliding connection between the piston rod and the cylinder.

Abstract: A pumping apparatus and method for pumping fluid using energy from rising and failing wave action in a body of fluid includes at least one float; a primary pump, such as a piston pump, connectable to the float for pumping fluid as the float rises with rising wave action; a secondary pump, such as a piston pump, connectable to the float and connectable to a fluid container extending above the pumping apparatus; and at least one anchor connectable to at least one of the primary pump and the secondary pump for anchoring the primary pump and the secondary pump relative to the float. The primary pump is moved from a reloaded position to a discharged position as the float rises the rising wave action in order to pump fluid. The secondary pump pumps fluid into the fluid container as the float rises with rising wave action.

Abstract: An apparatus and method of obtaining useful energy from wave action in a body of water. The apparatus comprises a cylinder, a reciprocal piston in the cylinder, a piston rod connected to the piston and extending sealably out of the cylinder, a mechanical tensioning device connected between the piston and the cylinder for maintaining resilient tension between the piston and the cylinder, a float connected to one of the piston rod or the cylinder, an anchor flexibly connected to the other of the piston rod or the cylinder which is not connected to the float, an inlet check valve and an outlet check valve connected to the cylinder, and a conduit extending from the outlet check to an area where water may be usefully employed. The mechanical tensioning device may be a spring or a weight and tether. The apparatus and method may be used to operate a hydroelectric generator.