| Patents for F04C 23 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids (6,201) |
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| 04/01/2009 | EP2042741A2 Two-stage compression rotary compressor |
| 04/01/2009 | EP2042740A2 two-stage rotary compressor |
| 04/01/2009 | EP2042739A1 Vacuum pump with two helical rotors |
| 04/01/2009 | EP2041436A1 Method for controlling a compressed air unit and a controller and compressed air unit for applying such a method |
| 04/01/2009 | EP2041435A1 Method for controlling a compressed air installation and controller and compressed air installation for employing such a method |
| 04/01/2009 | EP1910682B1 Vacuum pump |
| 04/01/2009 | CN101398001A Two-stage rotary compressor |
| 04/01/2009 | CN101398000A Two-stage rotary compressor |
| 04/01/2009 | CN101397999A Rotor type compressor |
| 03/31/2009 | US7510382 Apparatus for preventing overheating of scroll compressor |
| 03/26/2009 | US20090081053 Two-stage rotary compressor |
| 03/25/2009 | CN101395344A Fluid machine |
| 03/25/2009 | CN101392749A Vortex vacuum pump |
| 03/25/2009 | CN100472070C Double-cylinder rotary compressor and air conditioner therewith |
| 03/25/2009 | CN100472068C Air-feeding device |
| 03/19/2009 | WO2009034717A1 Rotary fluid machine |
| 03/18/2009 | CN101389867A Freezing device |
| 03/18/2009 | CN101387298A Double cylinders rotary compressor and freezing cycle device using the same |
| 03/18/2009 | CN101387297A Rotary compressor, method for producing thereof and freezing cycle device |
| 03/18/2009 | CN100470056C Secondary screw type compressor |
| 03/17/2009 | US7503755 Baffle plate assembly for a compressor |
| 03/12/2009 | WO2009031626A1 Two-cylinder rotary type compressor, and refrigerating cycle device |
| 03/11/2009 | CN101382137A Multi-stage roots dry vacuum pump discharging directly into atmosphere |
| 03/10/2009 | US7500836 Compressor |
| 03/05/2009 | WO2009028633A1 Multicylinder rotary type compressor, and refrigerating cycle apparatus |
| 03/05/2009 | WO2009028261A1 Rotary compressor |
| 03/04/2009 | CN100465450C A composite dry vacuum pump with roots rotors and screw rotors |
| 03/04/2009 | CN100465449C A multi-cylinder rotary compressor |
| 03/04/2009 | CN100465447C A rotary compressor |
| 03/04/2009 | CN100465437C An enclosed compressor |
| 02/26/2009 | WO2009025244A1 Multi-stage compressor |
| 02/26/2009 | WO2009024698A2 Refrigeration compressor with variable speed spirals |
| 02/26/2009 | WO2009024262A1 Multi-level rotary piston vacuum pump or compressor |
| 02/25/2009 | EP1301712B1 Monobloc housing for vacuum pump |
| 02/25/2009 | CN101375063A Vacuum pump unit |
| 02/25/2009 | CN101372970A Sealed compressor |
| 02/18/2009 | EP2025941A2 Portable vacuum creation device |
| 02/18/2009 | CN101368568A Polytropic compression units |
| 02/17/2009 | US7491045 Scroll compressor having a position adjustment device urging the stationary scroll towards the movable scroll by moving a seal formed between a support and the stationary scroll |
| 02/17/2009 | US7491034 Compressor protection and diagnostic system |
| 02/11/2009 | EP1348077B1 Refrigeration compressor |
| 02/11/2009 | CN201193610Y Closed circulation roots pump and water-ring pump vacuum unit |
| 02/11/2009 | CN100460685C Leakage detection system and method used for delivering leakage detector by a vacuum pump |
| 02/11/2009 | CN100460682C Scroll compressor with vapor injection |
| 02/05/2009 | WO2009017297A1 2 stage rotary compressor |
| 02/05/2009 | DE102007001316B4 Entstaubungsvorrichtung und Verfahren zur Entstaubung, insbesondere von Bandanlagen Dedusting device and method for removing dust, particularly of belt systems |
| 02/04/2009 | EP2020483A1 Compressor with built-in expander |
| 02/04/2009 | CN201190672Y Two-stage screw compressor |
| 02/04/2009 | CN201190650Y Electronic compressor |
| 02/04/2009 | CN100458165C Rotary compressor |
| 02/03/2009 | US7484945 Compressor for refrigerator-freezer having a porous member |
| 02/03/2009 | US7484943 Screw pump with improved efficiency of drawing fluid |
| 01/29/2009 | WO2009014161A1 Multi-stage compressor |
| 01/28/2009 | CN201187448Y Double-machine contraposition type CO2 spherical expansion compressor |
| 01/28/2009 | CN101354039A Novel low-vibration low-energy consumption electric machine overhead type single-stage sliding valve vacuum pump |
| 01/28/2009 | CN100455814C Two-stage screw compressor |
| 01/28/2009 | CN100455803C Rotary two-stage compressor and air conditioner using the compressor |
| 01/22/2009 | WO2009010796A2 An internal combustion rotary engine |
| 01/21/2009 | EP2017478A2 Electric compressor |
| 01/21/2009 | CN201184287Y Double-compressing cavity split type compressor |
| 01/21/2009 | CN101349270A Multicylinder rotary compressor and compressing system and refrigerating unit provided with same |
| 01/21/2009 | CN101349268A Screw compressor |
| 01/21/2009 | CN100453815C Double stage screw rod compressor and double stage compressing refrigerator using same |
| 01/14/2009 | CN201180651Y Combination type carbon dioxide expansion compressor |
| 01/14/2009 | CN101344090A Compression system, multi-cylinder rotary compressor |
| 01/14/2009 | CN101344089A Compression system, multi-cylinder rotary compressor |
| 01/14/2009 | CN101344088A Compression system, multi-cylinder rotary compressor |
| 01/14/2009 | CN101344087A Compression system |
| 01/14/2009 | CN101344086A Compression system, multi-cylinder rotary compressor and refrigerating apparatus using the same |
| 01/14/2009 | CN100451497C Digital scroll condensing unit controller |
| 01/14/2009 | CN100451340C Rotary-type enclosed compressor and refrigeration cycle apparatus |
| 01/13/2009 | US7476089 Scroll compressor having overheat preventing unit |
| 01/08/2009 | WO2009003884A1 Compressor comprising a fluid droplet-atomizing inflow chamber |
| 01/08/2009 | US20090007590 Refrigeration System |
| 01/07/2009 | CN201176938Y Electric automobile scroll-type compressor with air suction channel situated at front cover |
| 01/07/2009 | CN201176937Y Electric automobile scroll-type compressor with stator provided with noise-reduction and air-discharge structure |
| 01/07/2009 | CN201176935Y Scroll-type compressor for electric automobile |
| 01/07/2009 | CN201176934Y Highly efficiency low noise scroll-type compressor for electric automobile |
| 01/07/2009 | CN201176933Y Double end scroll-type compressor |
| 01/07/2009 | CN100449150C Hermetic compressor |
| 01/06/2009 | US7473079 Electric compressor with inverter |
| 01/06/2009 | US7472562 Compressor and mechanism for separating lubricating liquid |
| 01/01/2009 | US20090004036 Helical Screw Compressor |
| 12/31/2008 | EP2009285A1 Compressor |
| 12/31/2008 | CN100447424C Multi-cylinder rotary compressor |
| 12/31/2008 | CN100447423C Capacity variable rotary compressor |
| 12/31/2008 | CN100447422C Rotating fluid machine |
| 12/31/2008 | CN100447420C Scroll compressor |
| 12/24/2008 | DE102007028060A1 Vehicle e.g. car, air conditioning system, has compressor driven by motor e.g. direct current motor, where compressor and motor stay in connection with each other by centrifugal clutch, and motor shaft connected with drive shaft |
| 12/24/2008 | CN101328892A Rotary type duplex-cylinder compressor |
| 12/24/2008 | CN101328889A Scroll machine with continuous capacity modulation |
| 12/24/2008 | CN100445565C Variable capacity rotary compressor |
| 12/24/2008 | CN100445118C Car air conditioner and car with its conditioner |
| 12/18/2008 | WO2008152055A1 Orbiting-spiral scroll pump or compressor |
| 12/18/2008 | US20080310974 Hermetic Compressor With a Heat Dissipation System |
| 12/17/2008 | EP2003289A1 Fluid machine |
| 12/17/2008 | EP1712793B1 Compressor and method of plate installation |
| 12/17/2008 | CN100443830C Air-conditioner, outdoor unit and refrigeration unit |
| 12/17/2008 | CN100443728C Compressor |
| 12/17/2008 | CN100443727C 旋转式流体机械 Rotary fluid machine |