Blower impeller apparatus with pivotable blades

Centrifugal pump

Centrifugal pump impeller attachment

Dry running flexible impeller pump and method of manufacture

Fluid pumps

Horizontal multidirectional turbine windmill

Hydraulic or pneumatic machine with tilting blades

Impeller improvement

Inflatable blower

Marine drive water pump

Oscillating microturbine

Pump arrangements

Ram air turbines

Reduced diameter downthrust pad for a centrifugal pump

Rotary motor

Rotating fluid machine for reversible operation from turbine to

Rotatory pump having a knobbed impeller wheel, and a knobbed...