An eccentric-cam infusion pump compresses tubing for precise dosing while a valve prevents unintended flow and door-related medication suspension.
A cam-slot roller assembly lets the pump switch between tube occlusion and pressure-driven free flow while maintaining fluid containment.
Integrated membrane pumps and balancing pods equalize dialysate flow volumes while simplifying cassette-based fluid mixing and routing.
A motion-converted peristaltic dosing pump enables precise low-ppm additive metering while reducing discharge-pressure effects on flow.
A one-piece plunger and valve cage cuts assembly failures and downhole wear while a canted-coil clutch improves valve control.
A buffer chamber and adaptive reversal control keep hydraulic fluid separate from natural gas while improving piston transition efficiency.
A series piezoelectric pump with check valves and bypass flow reaches inflatable-device pressure targets in high magnetic field environments.
A deformation sensor embedded in the insulating glue layer enables closed-loop micromembrane pump control for precise fluid dosing.
Fluid pressure and electroosmotic flow drive a membrane-controlled shaft, enabling precise drug injection with less complex pumping control.
Phase-delayed piezoelectric transducer groups drive directional acoustic streaming, boosting micropump flow with low power and no valves.
Torque-assisting electric machines let a constant-speed gas engine handle variable fracturing loads, cutting noise and emissions while using field gas.
Coordinated multi-phase pistons and self-calibration cut peristaltic pump pulsation while reducing flexible conduit wear.
Spring-loaded pressure plates and guiding ribs keep pump tubes aligned, cutting wear, contamination risk, and hose replacement time.
A motor-driven downhole generator powers auxiliary loads and switches them from surface commands, avoiding separate DC conductors.
Positive-pressure piston pumping and inline heating simplify APD disposable sets while preserving pressure control, volumetric accuracy, and portability.