Male and female screw rotor assembly with specific tooth flanks
Meshing helical rotors
Method and apparatus for timing rotors in a rotary lobe pump
Method for the metered discharge of a string of a viscous...
Method of reducing system pressure pulsation for positive...
Methods and apparatus for unloading a screw compressor
Minimal contact seal positive displacement device method and...
Modular downhole multiphase pump
Modular multi-rotor compressor and method of manufacture
Molecular drag pump with rotors moving in same direction
Multi-rotor helical-screw compressor with discharge side...
Multi-rotor helical-screw compressor with thrust balance device
Multi-stage helical screw rotor
Multiple lobed piston pump with angularly and axially displaced
Multiple tooth engagement single screw mechanism
Multistage roots pump and a method of assembling such a pump