Gear pump or motor
Gear pump or motor units with sleeve coupling for shafts
Gear pump or motor with a shaftless gear
Gear pump with means for preventing shaft lock-up
Gear pump with pressure balancing structure
Gear pump with transmission gearwheel adjustment
Gear pump with variable throughput volume
Gear unit for a deep-borehole pump
Gradationally contracted screw compression equipment
Helical gear machine with improved high pressure port
Helical screw rotor profiles
High efficiency gear pump for pumping highly viscous fluids
High speed rotating apparatus having face-to-face angular contac
High speed rotating apparatus having face-to-face contact ball b
High viscosity product pumping method and apparatus
High-pressure, self-lubricating journal bearings
Hydraulic motor
Hydraulic pump utilizing floating shafts
Hydraulic pump utilizing floating shafts
Hydraulic rotary screw machine with axial balancing piston