Apparatus for converting gravitational energy to electrical...
Combined material conveyor and electrical power generating syste
Energy generating system using differential elevation
Gravity as a source of renewable energy
Gravity engine
Gravity flow hydraulic device
Hybrid energy convertor
Method and apparatus for harnessing the power of moving water
Method and apparatus for harnessing the power of moving water
Portable electricity generating gravity driven wheel system
Potential energy accumulating system using multiple types of ene
Power generating system
Pressure source and systems incorporating it
Propulsion system for water wheel
Sealed shaft gravity buoyancy energy system and method of...
Thermal-gravity engine
Water engine
Water power apparatus
Water-powered hydraulic motor