Balanced dual-lobe vane pump with radial inlet and outlet partin
Bearing and bearing support for rotary piston engine for compres
Bearing arrangement for rotary piston engine for compressing and
Complex teeth-type gas compressor
Downhole roller vane motor
Downhole roller vane motor and roller vane pump
Downhole roller vane motor and roller vane pump
Expansible and contractible chamber assembly and method
Fluid compressor with vertical longitudinal axis
Globoid-worm compressors
High-pressure dome type compressor capable of preventing oil dis
Hydraulic power transmission system
Intermeshing gear rotary engine with valved inlet
Mechanical pumps
Radially extended vapor inlet for a rotary multivaned expander
Roller displacement motor
Rotary compressor
Rotary compressor with valve in rotor
Rotary engine with a pair of piston assemblies and shuttle valve
Rotary engine with pistons and lenticular valves