Method and apparatus for deriving useful energy from sea waves

Method and apparatus for obtaining useful work from wave energy

Method for accumulating energy from natural power

Method of and system for controlling hydraulic turbine

Method of generating rotary power in a deepsea environment

Method of imparting energy to liquids

Method of recovering energy from liquids in deep cavities

Ocean current energy converter

Ocean raft energy generator

Ocean wave energy extraction

Ocean wave energy extraction system and components thereof

Ocean wave power generator (a “modular power-producing...

Omnidirectional air driven power generating system

Oscillating force turbine

Oscillating water column energy accumulator

Pneumatic hydro-electric power conversion system

Power generation

Power plant with energy storage deep water tank

Power unit for dam

Pressure wheel