| Patents for F04C 27 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids (2,516) |
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| 07/23/2009 | US20090185936 Scroll compressor |
| 07/23/2009 | US20090185935 Scroll machine |
| 07/23/2009 | US20090185934 Scroll Compressor Bodies with Scroll Tip Seals and Extended Thrust Region |
| 07/23/2009 | US20090185930 Scroll Compressor with Housing Shell Location |
| 07/22/2009 | CN100516534C Dry helical lobe compressor host rotor spindle sealing structure |
| 07/21/2009 | US7563087 Pump rotor seal apparatus and method |
| 07/15/2009 | CN100513791C An adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 07/07/2009 | US7556483 Electronic compressor having a reservoir chamber and an oil return passage for connecting the reservoir chamber with a suction chamber |
| 07/07/2009 | US7556015 Rotary device for use in an engine |
| 06/24/2009 | EP2072754A2 Motor-driven compressor with multi-part casing |
| 06/11/2009 | WO2002061283A3 Scroll vacuum pump with improved performance |
| 06/11/2009 | US20090148328 Lubricant backflow structure of compressor |
| 06/10/2009 | CN100497940C Scroll wrap tip with abradable selectively applied coating and load-bearing surface |
| 06/03/2009 | CN100494688C Apparatus for decreasing engine oil output of high-pressure rolling compressor |
| 05/28/2009 | WO2009012606A3 Displacement machine according to the spiral principle, comprising a bearing assembly on both sides |
| 05/27/2009 | CN201246306Y Floating cylinder sleeve airtight device of rotary air cylinder compressor |
| 05/27/2009 | CN101440802A Rotor pump |
| 05/27/2009 | CN100491734C Single-winged vacuum pump |
| 05/22/2009 | WO2009044197A3 A multi stage, clam shell vacuum pump |
| 05/20/2009 | EP2059672A2 Long life telescoping gear pumps and motors |
| 05/20/2009 | CN201241830Y Non-leakage mechanical seal single-stage sliding valve vacuum pump |
| 05/06/2009 | EP2055957A1 Scroll Compressor |
| 05/06/2009 | EP2055955A1 Scroll compressor |
| 04/22/2009 | CN101413504A Vortex compressor with floating seal and high pressure unloading functions |
| 04/16/2009 | WO2009046810A1 Vacuum pump, particularly a vane pump |
| 04/16/2009 | WO2006086009A3 Rotary opposed piston engine |
| 04/15/2009 | EP2048363A2 Scroll compressor with scroll deflection compensation |
| 04/15/2009 | EP2047103A1 Screw compressor capacity control |
| 04/09/2009 | WO2009044197A2 A multi stage, clam shell vacuum pump |
| 04/09/2009 | CA2698452A1 A multi stage, clam shell vacuum pump |
| 04/08/2009 | EP2044330A1 Rotor pump |
| 04/08/2009 | EP1701039B1 Scroll fluid machinery |
| 04/02/2009 | US20090087334 Sliding Vane Compression and Expansion Device |
| 03/31/2009 | US7510382 Apparatus for preventing overheating of scroll compressor |
| 03/19/2009 | WO2009035640A1 Compressor sealing arrangement |
| 03/19/2009 | WO2009035639A1 Compressor having improved sealing assembly |
| 03/12/2009 | US20090068048 Compressor Sealing Arrangement |
| 03/11/2009 | EP1948937B1 Rotor pump |
| 03/11/2009 | CN101383534A Motor for vacuum pump |
| 03/11/2009 | CN101382137A Multi-stage roots dry vacuum pump discharging directly into atmosphere |
| 03/11/2009 | CN100467870C Scroll-type compressor |
| 03/10/2009 | US7500838 Vacuum pump with a pair of screw rotors |
| 03/10/2009 | US7500836 Compressor |
| 02/26/2009 | WO2009025230A1 Scroll fluid machine |
| 02/26/2009 | WO2009024370A1 Dry-type vacuum pump comprising a device for sealing against lubricating fluids, and centrifuging element equipping such a device |
| 02/26/2009 | WO2009023974A1 Spiral-type positive-displacement machine |
| 02/26/2009 | US20090053088 Reduced Rotor Assembly Diameter Vane Pump |
| 02/26/2009 | DE102007039237A1 Pump for gas cell system, has shaft, which has rotor section and bearing section, and has sealing device, which has internal gasket and two external gaskets formed in axial direction |
| 02/25/2009 | CN101372964A High and low pressure separation apparatus of swirl compressor |
| 02/24/2009 | US7494329 Oil pump for a compressor |
| 02/18/2009 | CN101368566A Cylindrical compressor or vacuum pump |
| 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 |
| 02/11/2009 | CN100460684C Oilless roots vacuum pump with mechanical seal |
| 02/11/2009 | CN100460683C Capacity modulated scroll machine |
| 02/04/2009 | CN201190666Y Floating seal ring and scroll compressor using the floating seal ring |
| 02/04/2009 | CN100458242C Structure for preventing water coming into turbine fuel and fuel leakage |
| 01/29/2009 | WO2009012606A2 Displacement machine according to the spiral principle, comprising a bearing assembly on both sides |
| 01/29/2009 | US20090028738 Rotor |
| 01/28/2009 | CN201187449Y Seal strip used for swirl vacuum pump swirl tray top |
| 01/28/2009 | CN101354038A Novel non-leakage mechanical seal single-stage sliding valve vacuum pump |
| 01/21/2009 | CN100453814C Capacity modulated scroll machine |
| 01/14/2009 | CN100451497C Digital scroll condensing unit controller |
| 01/08/2009 | WO2009004360A1 Fkm or ffkm multiple layers seal |
| 01/08/2009 | WO2009003884A1 Compressor comprising a fluid droplet-atomizing inflow chamber |
| 01/08/2009 | CA2692086A1 Fkm or ffkm multiple layers seal |
| 01/07/2009 | EP2012016A1 Scroll-type fluid machine |
| 01/07/2009 | EP2012015A1 Scroll-type fluid machine |
| 01/07/2009 | EP1543254B8 Powder-metallurgically produced piston body comprising support webs and method for the production thereof |
| 01/07/2009 | CN100449149C Micro machined vortex type compressor and relevant technology |
| 01/01/2009 | US20090004036 Helical Screw Compressor |
| 12/31/2008 | CN201173188Y Double end-face mechanical sealing structure for high speed screw compressor |
| 12/31/2008 | CN100447420C Scroll compressor |
| 12/18/2008 | WO2008154490A1 Face seal and method of making |
| 12/17/2008 | CN100443728C Compressor |
| 12/10/2008 | CN101319672A Cyclone compressor |
| 12/02/2008 | US7458790 Vacuum pump with improved oil lubrication |
| 11/27/2008 | US20080289491 Powder-Metallurgically Produced Piston Body Comprising Support Webs |
| 11/26/2008 | CN101311543A Rotor shaft sealing method and structure of oil-free rotary compressor |
| 11/26/2008 | CN101311541A Rotating ring equalizing abrasion fluid pressure device |
| 11/19/2008 | CN100434656C Rotary type expansion machine |
| 11/12/2008 | CN201148974Y Forced wind cooled mechanical sealing device |
| 11/12/2008 | CN101305188A Scroll compressor with wrap walls provided with an abradable coating and a load-bearing surface at radially outer locations |
| 11/12/2008 | CN101303016A Rotor spindle sealing structure of oil-free rotary compressor |
| 11/12/2008 | CN100432585C An adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 11/12/2008 | CN100432584C An adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 11/06/2008 | US20080274001 Rotary Expander |
| 11/05/2008 | CN100430674C Digital volute condensation unit controller |
| 11/05/2008 | CN100430602C Scroll fluid machinery |
| 10/29/2008 | CN100429438C Strip brush seal |
| 10/28/2008 | USRE40554 Capacity modulated scroll machine having one or more pin members movably disposed for restricting the radius of the orbiting scroll member |
| 10/28/2008 | US7442016 Scroll pump and method of assembling same |
| 10/23/2008 | WO2008124950A1 Displacement machine according to the spiral principle |
| 10/23/2008 | US20080260562 Water-Injected Screw Compressor Element |
| 10/22/2008 | EP1983197A1 Fluid machine |
| 10/22/2008 | CN100427763C Compressor |
| 10/21/2008 | US7438540 Two-stage rotary compressor |
| 10/16/2008 | WO2008075131A3 Power train unit, method for controlling such a unit and automotive vehicle equipped with such a unit |
| 10/16/2008 | US20080253914 Liquid injection type screw compressor |
| 10/16/2008 | DE102007018247A1 Vakuumpumpe Vacuum pump |
| 10/15/2008 | EP1980752A2 Injection molded scroll form |