Device for converting reciprocal linear motion to continuous rot
Device for generating electricity by pedestrian and vehicular tr
Device for generating electricity by pedestrian and vehicular tr
Devices, systems and methods for generating electricity from...
Distributed powertrain for high torque, low electric power...
Distributed powertrain that increases electric power...
Downhill effect rotational apparatus and methods
Downhole electrical power generator
Drainwater/sewage treatment installation for producing electrica
Drive device
Drive for a windmill
Drive system for an electric generator
Dual-range drive configurations for synchronous and induction ge
Dynamic pressure differential hydroelectric generator
Dynamo for/on bicycles