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

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)
12/2009
12/24/2009	DE102004058399B4 Pumpe Pump
12/23/2009	EP2136083A2 A rotary compressor
12/23/2009	CN201368027Y Air compressor with slider and piston connected in series
12/23/2009	CN101611229A 回转式压缩机 Rotary Compressor
12/23/2009	CN100572816C Variable capacity multi-cylinder rotary compressor and its running method
12/17/2009	WO2009149682A2 Motor-pump module
12/16/2009	EP2133571A2 Motor-driven compressor
12/16/2009	EP2133512A1 Two-stage rotary type expander, expander-integrated compressor, and refrigeration cycle device
12/16/2009	CN201363276Y Double-cylinder two-stage compression rotation type compressor
12/16/2009	CN201363274Y Coal-bed gas double-screw compressor unit
12/09/2009	CN101600885A 压缩机 Compressor
12/09/2009	CN101598128A Two cylinder rotation type hermetic compressor and its manufacturing method
12/08/2009	US7628592 Fluid machine having reduced heat input to fluid
12/02/2009	EP2128447A2 Rotary compressor
11/2009
11/26/2009	WO2009142023A1 Fluid machine and refrigeration cycle device
11/26/2009	WO2009141956A1 Fluid machine and refrigeration cycle device
11/26/2009	WO2009010796A3 An internal combustion rotary engine
11/25/2009	EP2123915A1 Scroll type fluid machine
11/18/2009	EP2119916A1 Rotary compressor
11/18/2009	EP2119915A2 Two-stage screw compressor and refrigerating device
11/18/2009	EP2117397A2 Flexible impeller pumps for mixing individual components
11/18/2009	CN101581304A Two-stage screw compressor and refrigerating device
11/17/2009	US7618242 Hermetic sealed compressor
11/12/2009	WO2009136488A1 Fluid machine
11/12/2009	US20090277215 Two-stage screw compressor and refrigerating device
11/11/2009	EP2115302A1 Compressor and oil blocking device therefor
11/11/2009	CN101576084A Vacuum pump with abnormity early warning and emergency protection device
11/11/2009	CN101576082A Screw compressor
11/11/2009	CN100559028C Rapidly pumping out an enclosure while limiting energy consumption
11/10/2009	US7614859 Scroll compressor with certain pressure ratio between discharge pressure and suction pressure and with certain ratio of diameter of orbiting mirror plate and outer diameter of the annular seal
11/04/2009	EP2113053A1 Compressor and oil separating device therefor
10/2009
10/29/2009	US20090269231 Method of Pumping Gas
10/28/2009	EP2052156B1 Multi-stage compressor
10/27/2009	US7607904 Rotary compressor with low pressure space surrounding outer peripheral face of compression mechanism and discharge passage passing through housing
10/21/2009	EP2110556A1 Compressor
10/21/2009	CN101560978A Vapor expander driven air compressor
10/21/2009	CN101560976A Energy-saving and environment-friendly vacuum device applied to petrochemical engineering and mixed arene separating system
10/15/2009	DE10300683B4 Hybridverdichter Hybrid compressor
10/14/2009	EP2108841A2 Shaft coupling for scroll compressor
10/14/2009	CN100549425C Dual-shaft vacuum pump
10/14/2009	CN100549419C Bottom plate for sealing outer shell
10/13/2009	US7600986 Filtering device for multistage compression type rotary compressor
10/07/2009	EP2107247A1 Rotary compressor
10/07/2009	CN201321982Y Directly-connected two-stage vacuum pump
10/07/2009	CN101550939A Compressor sound attenuation
10/07/2009	CN100547245C Plural compressors
10/06/2009	CA2540790C Lubrication of a hermetic carbon dioxide compressor
10/01/2009	US20090246054 Three-Stage Screw Compressor
09/2009
09/30/2009	EP2105613A2 Sealed type scroll compressor
09/30/2009	CN100545457C Freezing cycle device
09/24/2009	WO2009116237A1 Freezing device
09/24/2009	US20090238710 Multicylindrical rotary compressor, compression system, and freezing device using the compression system
09/23/2009	EP2103808A2 Scroll compressor
09/23/2009	CN100543308C Lubricating-free screw compressor
09/16/2009	CN101532493A Rotary compressor
09/16/2009	CN101532492A Tempering method for a screw-type vacuum pump
09/16/2009	CN100540900C 涡旋压缩机 Scroll Compressor
09/15/2009	US7588428 Rotary fluid device performing compression and expansion of fluid within a common cylinder
09/15/2009	US7588427 Variable capacity rotary compressor
09/09/2009	EP2098730A1 Fluid machine
09/09/2009	EP2097648A1 Variable capacity rotary compressor
09/09/2009	CN201306283Y Cam-pump vacuum machine set
09/09/2009	CN101529097A Rotary fluid machine
09/08/2009	US7585160 Hermetic compressor
09/02/2009	EP2096310A1 Scroll compressor
09/02/2009	CN100535446C Method for assembling pump-body of compressor with revolving twin cylinder
08/2009
08/27/2009	WO2009103701A1 Vacuum pump system and use of a multi-stage vacuum pump
08/27/2009	DE10393034B4 Verhinderung von Ölverschleppung bei Heliumgasverdichtern Prevention of oil carryover in helium gas compressors
08/25/2009	US7578660 Hermetic compressor
08/19/2009	EP2090745A1 Fluid machinery
08/19/2009	CN201292959Y Dry vacuum pump
08/19/2009	CN201292958Y Vortices type vacuum pump
08/19/2009	CN201292944Y Large pumping speed type high vacuum dry vacuum pump
08/19/2009	CN100529407C Multicylinder rotary compressor
08/19/2009	CN100529401C 机动泵 Motorized pump
08/13/2009	WO2009098874A1 Compressor and freezer
08/13/2009	WO2009098872A1 Fluid machine
08/12/2009	EP1609990B1 Vacuum device and vacuum pump
08/12/2009	CN101506471A Rotary expander
08/12/2009	CN101506470A Multi-stage rotary fluid machine and refrigeration cycle device
08/12/2009	CN100526651C Multi-cylinder rotary compressor
08/12/2009	CN100526650C Multi-stage rotary compressor and its method for setting elimination volume ratio
08/12/2009	CN100526649C Worm compressor provided with a sound absorber
08/06/2009	WO2009096288A1 Sealed-type scroll compressor
08/06/2009	WO2009096220A1 Enclosed compressor
08/06/2009	WO2009096167A1 Expander-integrated compressor and refrigeration cycle device using the same
08/05/2009	CN101498307A Rotary compressor with double working cylinders
08/05/2009	CN101498304A Coal bed gas double screw rod compressor unit
08/05/2009	CN100523664C Oil carry-over prevention from helium gas compressor
08/05/2009	CN100523509C Rotary compressor
08/05/2009	CN100523508C Capacity variable type twin rotary compressor and driving method thereof and airconditioner with this and driving method thereof
08/05/2009	CN100523505C Turbo machine having dual volume ratio
08/05/2009	CN100523500C 压缩机 Compressor
07/2009
07/30/2009	WO2009093470A1 Rotary fluid machine
07/30/2009	US20090191078 Lubricating pump
07/29/2009	CN100520222C Oil level equalizing system for multiple compressors
07/23/2009	WO2009091897A1 Scroll compressor with housing shell location
07/23/2009	WO2009091891A1 Mounting base and scroll compressor incorporating same
07/23/2009	WO2009091880A1 Scroll compressor build assembly
07/23/2009	WO2009091876A1 Scroll compressor suction flow path & bearing arrangement features

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