An integrated support pin gives the running spindle axial support on the pressure side, preventing offset during short-term rotation reversal.
Variable-profile screw rotors with changing diameter and helix geometry cut radial leakage and improve high-speed compression efficiency.
Variable rotor profiles and helix geometry reduce radial leakage, remove blow holes, and improve screw compressor pressure ratio.
Recessed concave discharge sides let hydraulic pump gears use more teeth to cut noise and pressure ripple without losing specific flow rate.
Lubricated polymer screws and casing parts cut friction, wear, and vibration in screw pumps while improving flow efficiency and durability.
Port edges shaped to rotor lobe contours improve intake and exhaust timing in two-stroke rotary engines while supporting port integrity.
Variable rotor profiles and outer diameters cut radial leakage and port losses while improving screw compressor efficiency at high speeds.
Rotationally indexed stator sections secured by housing deformation improve rotor-stator alignment, sealing, and wear life in downhole motors.
Variable rotor profiles and right- and left-hand helices reduce radial leakage, improve sealing, and increase screw-compressor efficiency.
Variable ports and a rotatable hub schedule fluid flow, limit leakage, and support adjustable compression ratios.
A lubricant supply unit maintains a film at the screw rotor’s high-pressure end face, preventing casing contact during interruptions.
Segmented inflows and wobbling rotors fill chambers fully, reducing pressure peaks.
Eccentric lenticular rotors maintain apexes within a defined orbital pattern, resolving clearance conflicts at high RPMs while increasing power strokes.
A wobbling pump shaft redirects radial forces to an axial direction, eliminating bearing wear and enabling higher working pressures.
Segmented rotary pistons engage gears to reduce friction and noise while creating high pressures without complex mechanical lubrication systems.
A fuel pump casing includes a recessed portion that prevents displacement when foreign substances lock the rotors, maintaining efficiency.
A rotary machine uses complementary discs to vary enclosed volume in three dimensions for continuous fluid displacement.