LandOfFree - US Patents - Listing for Rotary expansible chamber devices

Rotary expansible chamber devices – Interengaging rotating members – Helical or herringbone

Screw type compressor

Rotary expansible chamber devices – Interengaging rotating members – Like rotary members

Screw type compressor rotor, rotor casting core and method of ma

Rotary expansible chamber devices – Interengaging rotating members – Helical or herringbone

Screw type vacuum pump

Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – Valve regulated non-working fluid

Screw type vacuum pump with introduced inert gas

Rotary expansible chamber devices – With plural working fluid inlet or outlet passages

Screw vacuum pump

Rotary expansible chamber devices – Multistage – Interengaging rotary members

Screw vacuum pump

Rotary expansible chamber devices – Interengaging rotating members – Helical or herringbone

Screw vacuum pump

Rotary expansible chamber devices – Interengaging rotating members – Helical or herringbone

Screw vacuum pump

Rotary expansible chamber devices – Multistage – Interengaging rotary members

Screw vacuum pump having a decreasing pitch for the screw member

Rotary expansible chamber devices – With signal – indicator or transparent inspection means

Screw vacuum pump having valve controlled cooling chambers

Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – Non-working fluid passage in inner working or reacting member

Screw vacuum pump with a coolant circuit

Rotary expansible chamber devices – Interengaging rotating members – Helical or herringbone

Screw vacuum pump with a reduced starting load

Rotary expansible chamber devices – With mechanical sealing

Screw vacuum pump with lubricated bearings and a plurality of sh

Rotary expansible chamber devices – Multistage – Interengaging rotary members

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

Rotary expansible chamber devices – Interengaging rotating members – Helical or herringbone

Screw-rotor machine with an ellipse as a part of its male rotor

Rotary expansible chamber devices – Interengaging rotating members – Helical or herringbone

Screw-rotor machine with straight flank sections

Rotary expansible chamber devices – Grooved abutting cylinder-rotating member end surfaces – Non-working fluid directed to groove

Screw-type compressor having an axial bearing part on only...

Rotary expansible chamber devices – Non-metallic working member – cylinder or partition

Screw-type compressor with liquid lock protection

Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – Non-working and working fluids intermix in working chamber

Screw-type compressor/expander with valves at each axial end of