Abstract: A dual powered take-off (PTO) device that efficiently extracts the kinetic energy stored in oceanic waves by converting the up and down movement of passing waves into a linear, bi-directional movement. The prime mover is a float which converts its movement in two ways: (1) by utilization of a direct drive, mechanical one-way rotary force with which to drive ancillary, sub-system devices such as electrical generators and/or pumps and, (2) by utilization of a reciprocating air flow that results as a by-product of the float's movement and, this air flow is exploited to spin one or more self-rectifying turbine(s) to drive electrical generators and/or pumps.

Abstract: The dual rotor turbine configuration efficiently harnesses oceanic wave energy within an oscillating water column system. The up and down movement of the waves creates a bi-directional pneumatic airflow which spins the twin turbine assemblies. The resulting rotary force is then utilized to drive two electrical generators simultaneously. Each turbine rotor set is composed of a radial array of identical asymmetrical airfoil blades (similar to NASA GA(W)-1). The two rotor sets are assembled as back-to-back minor images. Both rotor sets are locked to a common axle by means of sprag-type freewheeling clutches. This configuration provides for smooth and continuous unidirectional movement of the axial drive line which drives the two generators.

Abstract: The dual rotor turbine configuration efficiently harnesses oceanic wave energy within an oscillating water column system. The up and down movement of the waves creates a bi-directional pneumatic airflow which spins the twin turbine assemblies. The resulting rotary force is then utilized to drive two electrical generators simultaneously. Each turbine rotor set is composed of a radial array of identical asymmetrical airfoil blades (similar to NASA GA(W)-1). The two rotor sets are assembled as back-to-back mirror images. Both rotor sets are locked to a common axle by means of sprag-type freewheeling clutches. This configuration provides for smooth and continuous unidirectional movement of the axial drive line which drives the two generators.