Distribution system for high head hydroelectric machine
Distributor control for hydraulic reversing turbines
Distributor for a reaction water turbine
Distributor for hydraulic reversing turbines
Distributor for turbo hydraulic machines
Dither system for a spring mass system
Double acting pipeless runner blade servo with air bias for...
Double drag wind rotor
Double screw seals
Double-vortex pressure motor
Downhole positive displacement motor
Draft tube aeration with check valves
Draft tube aeration with eductor
Draft tube for hydraulic turbines
Draft tube venting arrangement
Drag reducing method and arrangement for hydraulic turbine...
Drag reduction in pumps and turbines
Drive
Drive apparatus with a drive element made from a shape...
Drive device for a windmill provided with two...