Rotating spiral pump with cooling between radial steps

Rotor-to-rotor coupling

Rotor-type pump having a communication passage interconnecting w

Screw compressor

Screw compressor

Screw fluid machine

Screw machine having a plurality of symmetrically arranged rotor

Screw pump with improved efficiency of drawing fluid

Screw rotor machine with hollow thread rotor enclosing a screw c

Screw vacuum pump

Screw vacuum pump having a decreasing pitch for the screw member

Screw vacuum pump with male and female screw rotors having...

Scroll apparatus

Scroll apparatus with pressurizable fluid chamber for axial scro

Scroll compressor of two-stage compression type having an improv

Scroll fluid machine having multistage compressing part

Scroll fluid machine having scroll members at each end of a...

Scroll pump

Scroll pump with axially spaced pumping chambers in series

Scroll type compressor or pump with axial pressure balancing