| Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462) |
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| 05/13/2009 | CN100487248C Gear type compressor |
| 05/13/2009 | CN100487247C Scroll fluid machine |
| 05/13/2009 | CN100487245C Fluid conveying machine employing elliptic rotation and compression principle |
| 05/13/2009 | CN100487244C Low input torque rotor for vane pump |
| 05/12/2009 | US7530798 Multistage compressor for compressing gases |
| 05/07/2009 | US20090114047 Gear Assembly |
| 05/07/2009 | DE112007000514T5 Flügelpumpe mit reduziertem Rotoranordnungsdurchmesser Vane pump rotor assembly with reduced diameter |
| 05/06/2009 | EP2055957A1 Scroll Compressor |
| 05/06/2009 | EP2055955A1 Scroll compressor |
| 05/06/2009 | EP2054625A1 Rotating-slide vacuum pump or compressor of block design having a disc-rotor synchronous motor which is mounted on flying bearings |
| 05/06/2009 | EP1327078B1 Multi-stage helical screw rotor |
| 05/06/2009 | CN201234198Y Rotor, compressor and device for brushless DC motor |
| 05/06/2009 | CN201232638Y Screw for screw compressor |
| 05/06/2009 | CN201232635Y Compressor or vacuum pump |
| 05/06/2009 | CN201232634Y Two side surface sealing structure for slide and arch slide block structure |
| 05/06/2009 | CN101427029A Scroll type fluid machine |
| 05/06/2009 | CN101424267A Rotary compressor |
| 05/06/2009 | CN101424266A Oblique star wheel single screw compressor |
| 05/06/2009 | CN101424265A Scroll compressor |
| 05/06/2009 | CN100485165C Scroll machine with stepped guide sleeve |
| 05/05/2009 | US7527485 Rotationally induced variable volume chambers |
| 05/05/2009 | US7527484 Muffler of scroll compressor |
| 04/30/2009 | WO2009055009A2 Scroll compressor for carbon dioxide refrigerant |
| 04/30/2009 | WO2009054285A1 Screw fluid machine |
| 04/30/2009 | WO2009053012A2 A vacuum pump having a single vane |
| 04/30/2009 | WO2009052929A1 Vacuum pump |
| 04/30/2009 | WO2009035626A3 Compressor with retaining mechanism |
| 04/30/2009 | US20090110580 Scroll type fluid machine |
| 04/30/2009 | US20090110570 Scroll compressor |
| 04/29/2009 | EP2053247A1 Multistage compressor |
| 04/29/2009 | EP2052158A1 Rotor cooling for dry-running twin-shaft vacuum pumps or compressors |
| 04/29/2009 | EP1846640A4 Compressor slide valve lubrication |
| 04/29/2009 | CN101421518A Improved vacuum pump |
| 04/29/2009 | CN101418801A Screw compressor |
| 04/29/2009 | CN101418797A Air compressor |
| 04/29/2009 | CN101418796A Screw fluid machine |
| 04/29/2009 | CN101418791A Novel scroll compressor and method of manufacturing same |
| 04/29/2009 | CN101418112A Corrosion resistant material and method for preparing corrosion resistant roots vacuum pump |
| 04/29/2009 | CN100482945C Check valve of scroll compressor |
| 04/28/2009 | CA2384748C A gear and a fluid machine with a pair of engaging gears of this type |
| 04/28/2009 | CA2362659C Coalescing device and method for removing particles from a rotary gas compressor |
| 04/23/2009 | WO2009051919A1 Sealing tabs on orbiting scroll |
| 04/23/2009 | WO2009051640A1 Scroll compressor with scroll deflection compensation |
| 04/23/2009 | WO2009051380A2 Scroll compressor |
| 04/23/2009 | WO2009050126A1 Scroll device for compression or expansion |
| 04/23/2009 | US20090104062 Compressor |
| 04/23/2009 | US20090104060 Compressor |
| 04/23/2009 | DE112007001338T5 Drehschieberpumpe zum Pumpen von Hydraulikfluid Rotary vane pump for pumping hydraulic fluid |
| 04/22/2009 | EP2050966A2 Compressor |
| 04/22/2009 | EP2050965A2 Compressor |
| 04/22/2009 | EP2050964A1 A rotary piston compressor |
| 04/22/2009 | CN201225288Y Explosion-proof type oil and gas recovery vacuum pump |
| 04/22/2009 | CN201225287Y Tandem type single screw compressor |
| 04/22/2009 | CN201225286Y Cam shaft drive single vane rotary vacuum pump |
| 04/22/2009 | CN201225285Y Simple single screw compressor |
| 04/22/2009 | CN201225284Y Single screw compressor with axial adjustable screw rod rotor |
| 04/22/2009 | CN101415947A Counterflow prevention apparatus for compressor |
| 04/22/2009 | CN101413506A Scroll compressor and manufacturing method thereof |
| 04/22/2009 | CN101413504A Vortex compressor with floating seal and high pressure unloading functions |
| 04/22/2009 | CN100480514C Scroll compressor |
| 04/22/2009 | CN100480513C Swirl type fluid machinery |
| 04/22/2009 | CN100480488C Kneading positive-displacement method of fluid machinery and mechanism and purpose thereof |
| 04/21/2009 | US7520738 Closed system rotary machine |
| 04/21/2009 | US7520737 Positive-displacement fluid machine |
| 04/21/2009 | US7520733 Multistage compression type rotary compressor |
| 04/16/2009 | WO2009046810A1 Vacuum pump, particularly a vane pump |
| 04/16/2009 | WO2008034551A8 A rotary pump with vanes |
| 04/16/2009 | WO2006086009A3 Rotary opposed piston engine |
| 04/16/2009 | WO2006047241A3 Gerotor apparatus for a quasi-isothermal brayton cycle engine |
| 04/16/2009 | US20090098000 Scroll compressor with scroll deflection compensation |
| 04/16/2009 | DE102008050512A1 Vakuumpumpe für Kraftfahrzeuge Vacuum pump for motor vehicles |
| 04/15/2009 | EP2048365A2 Operation control device for vacuum pump and method for stopping operation thereof |
| 04/15/2009 | EP2048364A2 Plural compressors with capacity control |
| 04/15/2009 | EP2048363A2 Scroll compressor with scroll deflection compensation |
| 04/15/2009 | EP2047103A1 Screw compressor capacity control |
| 04/15/2009 | EP1491768B1 Compressor |
| 04/15/2009 | CN201221468Y Screw compressor rotor |
| 04/15/2009 | CN101410590A A rotor for a vane pump, made of plastic material reinforced by metallic foil |
| 04/15/2009 | CN101408177A Rotor seal device of rotary compressor |
| 04/15/2009 | CN101408176A Rotary compressor with air jetting apparatus |
| 04/15/2009 | CN101408175A Rotary type refrigeration air conditioner compressor |
| 04/15/2009 | CN101408174A Rotary cylinder type revolving compressor |
| 04/15/2009 | CN101408173A Large-scale semi-closed screw type refrigeration compressor |
| 04/15/2009 | CN100478570C Rotary screw machine and method of transforming a motion in such a machine |
| 04/09/2009 | WO2009044197A2 A multi stage, clam shell vacuum pump |
| 04/09/2009 | CA2698452A1 A multi stage, clam shell vacuum pump |
| 04/09/2009 | CA2640539A1 Rotor attachment for compressor |
| 04/08/2009 | EP2044330A1 Rotor pump |
| 04/08/2009 | EP1701039B1 Scroll fluid machinery |
| 04/08/2009 | CN201218205Y Scroll compressor |
| 04/08/2009 | CN101403383A Screw compressor for refrigeration device |
| 04/08/2009 | CN100476212C Variable capacity rotary compressor |
| 04/08/2009 | CN100476211C Screw compressor |
| 04/07/2009 | US7513761 Double screw compressor for supplying gas |
| 04/07/2009 | US7513753 Variable capacity scroll compressor |
| 04/02/2009 | WO2009042175A1 A rotary compressor |
| 04/02/2009 | WO2009041390A1 Scroll fluid machine |
| 04/02/2009 | WO2009041056A1 Rotary fluid machine |
| 04/02/2009 | WO2009040877A1 Volume type gas compressor |
| 04/02/2009 | WO2009040412A1 Vacuum pump with two helical rotors |