| 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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| 08/17/2011 | CN102155384A Self-powered pump |
| 08/17/2011 | CN102155383A Automatic traction type compressor |
| 08/17/2011 | CN101506470B Multi-stage rotary fluid machine and refrigeration cycle device |
| 08/10/2011 | EP2354550A2 Integrated-inverter electric compressor |
| 08/10/2011 | CN101709701B Single-cylinder multistage gas-compression rolling piston compressor |
| 08/03/2011 | EP2351907A1 Fluid machine |
| 08/03/2011 | EP1454064B1 Scroll compressor with a check valve |
| 08/03/2011 | CN201916196U 压差供油的立式双级涡旋压缩机 Vertical two-stage oil pressure scroll compressor |
| 08/03/2011 | CN201916195U 带吸油管的双级涡旋压缩机 Two-stage scroll compressor with a suction pipe |
| 08/03/2011 | CN102141041A Pressure switch fixing device |
| 07/27/2011 | CN201908838U Compressor and air conditioner with same |
| 07/27/2011 | CN102138004A Rotary-type 2-stage compressor |
| 07/27/2011 | CN102135097A Mobile screw machine driven by single cylinder diesel engine |
| 07/21/2011 | DE102011000179A1 Motor-getriebener Kompressor Motor-driven compressor |
| 07/20/2011 | CN201902330U Variable-capacity rotary compressor |
| 07/20/2011 | CN201902329U Variable-capacity rotary compressor |
| 07/20/2011 | CN102132046A Enclosed compressor, two-cylinder rotary compressor, and refrigerating cycle apparatus |
| 07/20/2011 | CN102132045A Rotary compressor |
| 07/20/2011 | CN102128166A Compressor and control method thereof |
| 07/20/2011 | CN101624986B Slip sheet control device of rotary compressor |
| 07/20/2011 | CN101310110B Installation for high pressure compression with several stages |
| 07/14/2011 | WO2011083510A1 Refrigeration cycling device and expander installed in same |
| 07/13/2011 | EP2342462A2 Method for operating an oil-tight vacuum pump and oil-tight vacuum pump |
| 07/13/2011 | CN102124229A Rotary compressor |
| 07/13/2011 | CN102121474A Method for assembling pump body of double-cylinder rotation type compressor |
| 07/13/2011 | CN102121473A Scroll machine with continuous capacity modulation |
| 07/07/2011 | US20110165004 Rotary-type 2-stage compressor |
| 07/06/2011 | CN1955477B Multi-stage rotary compressor |
| 07/06/2011 | CN102119277A Compressor and air-conditioner having the same |
| 07/06/2011 | CN102116293A Helical compressor for refrigerating medium |
| 06/30/2011 | WO2011077930A1 Multi-stage vacuum pump |
| 06/29/2011 | EP2339180A1 Multiple-stage compressor |
| 06/29/2011 | EP2339179A2 Rotary compressor |
| 06/29/2011 | CN201884282U Rotation refrigerating compressor with three operating chambers |
| 06/23/2011 | WO2011072617A1 Totally-enclosed type refrigeration compressor and rotor compressor unit thereof |
| 06/22/2011 | EP2336675A1 Refrigerating apparatus |
| 06/22/2011 | EP2336567A2 Rotary vane pump with liquids separator |
| 06/22/2011 | EP1702163B1 Worm compressor provided with a sound absorber |
| 06/22/2011 | CN201874821U Rotary compressor with variable capacity |
| 06/22/2011 | CN201874820U 变容式旋转压缩机 Variable capacity rotary compressor |
| 06/22/2011 | CN102105694A Variable capacity type rotary compressor, cooling apparatus having the same, and method for driving the same |
| 06/22/2011 | CN102102669A Multi-cylinder rotary compressor and refrigeration circulation device |
| 06/22/2011 | CN102102668A Rotary compressor |
| 06/22/2011 | CN101446289B Air compressor |
| 06/16/2011 | WO2010136472A3 Microsystems for converting pressures and compression |
| 06/15/2011 | CN102099583A Cooling for a screw pump |
| 06/15/2011 | CN102094823A Cylinder assembly and core-adjusting method for cylinder of double-cylinder rotary compressor |
| 06/15/2011 | CN102094821A Rotary compressor |
| 06/15/2011 | CN101560978B Vapor expander driven air compressor |
| 06/15/2011 | CN101506471B Rotary expander |
| 06/15/2011 | CN101498304B Coal bed gas double screw rod compressor unit |
| 06/15/2011 | CN101178069B Compressor unit |
| 06/08/2011 | EP2330301A1 Sealed fluid machine producing method and sealed fluid machine |
| 06/08/2011 | CN102086869A Rotary compressor |
| 06/01/2011 | EP1156222B1 Scroll type compressor |
| 06/01/2011 | CN201851359U Pump body with countersunk head slot and dual-rotor two-stage enthalpy-increase compressor provided with same |
| 05/26/2011 | WO2011061429A2 Method and device for pumping with reduced power use |
| 05/25/2011 | EP2325492A1 Scroll fluid machine |
| 05/25/2011 | CN201843782U Two-stage medium pressure screw-type air compressor unit |
| 05/25/2011 | CN102072156A Multi-cylinder rotary compressor and manufacture method thereof |
| 05/18/2011 | EP2322804A1 Multiple-stage compressor |
| 05/18/2011 | CN201836054U Double-cylinder rotary compressor |
| 05/17/2011 | USRE42371 Scroll machine |
| 05/17/2011 | US7942642 Method and apparatus for highly efficient compact vapor compression cooling |
| 05/12/2011 | WO2011055444A1 Heat pump device, two-stage compressor, and method of operating heat pump device |
| 05/12/2011 | DE202010015277U1 Drehkolben-Heißgasmotor Rotary-piston Stirling engine |
| 05/12/2011 | DE102010009083A1 Vacuum pump e.g. liquid-sealed vacuum pump, for use as rotary vane pump, has two pumping stages respectively arranged at vacuum side and pressure side, where one of pumping stages is implemented as screw pumping stage with screw pump unit |
| 05/11/2011 | EP2318716A1 Variable capacity type rotary compressor, cooling apparatus having the same, and method for driving the same |
| 05/11/2011 | CN201827078U Vacuum device of mixed aromatics extraction and separation system |
| 05/11/2011 | CN201827076U Airtight compressor and refrigeration cycle device |
| 05/11/2011 | CN1963215B Volume variable rotating compressor |
| 05/11/2011 | CN102052318A Compressor |
| 05/11/2011 | CN102052309A Four-stage scroll compressor |
| 05/11/2011 | CN102052308A Five-stage scroll compressor |
| 05/11/2011 | CN102052307A Eight-stage scroll compressor |
| 05/11/2011 | CN102052306A Nine-stage scroll compressor |
| 05/11/2011 | CN102052305A Seven-stage scroll compressor |
| 05/11/2011 | CN102052304A Six-stage scroll compressor |
| 05/11/2011 | CN102052303A Ten-stage scroll compressor |
| 05/11/2011 | CN102052302A Eleven-stage scroll compressor |
| 05/11/2011 | CN102052301A N-stage scroll compressor |
| 05/10/2011 | CA2720156A1 Compressor assembly |
| 05/04/2011 | EP2317147A1 Compressor and air-conditioner having the same |
| 05/04/2011 | EP2317146A1 Oil recovery member, and motor mechanism and compressor using the same |
| 05/04/2011 | CN201818500U Double-rotor compressor |
| 05/04/2011 | CN1807896B Multi-stage compression type rotary compressor |
| 05/04/2011 | CN102042227A Double-rotor two-stage enthalpy-increase compressor, air conditioner and heat pump water heater |
| 04/28/2011 | WO2011011434A3 Gaseous fluid pump |
| 04/27/2011 | EP2313657A1 Cooling for a screw pump |
| 04/27/2011 | CN1896519B Compound compressors |
| 04/27/2011 | CN101375063B Vacuum pump unit |
| 04/20/2011 | CN201802623U Synchronous air flue no-pulse paw-shaped dry type oiless vacuum pump |
| 04/20/2011 | CN102022332A Capacity-control type double-cylinder rotary compressor and control method thereof |
| 04/13/2011 | EP2307731A2 Compressor having terminal plug assembly |
| 04/13/2011 | EP2307102A1 Mobile breathing-air compressor unit with means for keeping the operation temperature below a limit value |
| 04/13/2011 | CN101634500B Refrigeration cycle system |
| 04/13/2011 | CN101529097B Rotary fluid machine |
| 04/07/2011 | WO2011038617A1 Spherical expansion compressor adapted to variable working conditions |
| 04/06/2011 | CN201786662U Rotary dual-rotor compressor |
| 04/06/2011 | CN201786661U Miniature oil seal type double-stage vacuum pump |