| Patents for F04C 27 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids (2,516) |
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| 03/04/2008 | US7338268 Discharge valve device of a compressor |
| 02/28/2008 | DE10151176B4 Verdichteranlage mit mindestens einem wassereingespritzten Schraubenverdichter zum Verdichten von Gas Compressor system with at least one water-injected screw compressor for compressing gas |
| 02/27/2008 | CN201027650Y Roots vacuum pump |
| 02/27/2008 | CN100371600C Vortex type compressor for preventing leakage of compressed gas |
| 02/20/2008 | CN100370141C Vane type vacuum pump |
| 02/14/2008 | US20080038134 Scroll compressor |
| 02/14/2008 | US20080038133 Scroll Compressor |
| 02/13/2008 | EP1886021A2 Control and protection system for a variable capacity compressor |
| 02/11/2008 | CA2594033A1 Two stage conical liquid ring pump having removable manifold, shims and first and second stage head o-ring receiving boss |
| 01/31/2008 | WO2008011934A1 Rotor pump |
| 01/31/2008 | US20080025860 Two-stage rotary compressor |
| 01/30/2008 | CN100365281C Scroll compressor |
| 01/29/2008 | US7322809 Rotary compressor with sealing portions and oil-supply groove |
| 01/23/2008 | EP1502028B1 Liquid ring compressor |
| 01/23/2008 | CN100363625C Compressor |
| 01/23/2008 | CN100363621C Improvements in seal assemblies |
| 01/16/2008 | EP1766238B1 Single-winged vacuum pump |
| 01/16/2008 | CN100362258C Powder-metallurgically produced piston body comprising support webs and method for the production thereof |
| 01/15/2008 | US7318275 Method of remanufacturing a compressor |
| 01/09/2008 | EP1876357A1 Oil supply structure of scroll compressor |
| 01/09/2008 | EP1397595B1 Liquid seal pump of the helical screw type |
| 01/08/2008 | US7316550 Scroll compressor |
| 12/27/2007 | DE19512949B4 Schraubenverdichter mit Dichtungsanordnung Screw compressor seal assembly |
| 12/26/2007 | EP1870598A1 Scroll compressor |
| 12/26/2007 | CN200996378Y Vortex compressor with compression-resisting sealing structure |
| 12/26/2007 | CN101092961A Roots blower |
| 12/25/2007 | US7310876 Method for making a piston body |
| 12/20/2007 | US20070292292 Vane cell pump |
| 12/20/2007 | US20070292291 Vane cell pump |
| 12/19/2007 | EP1866560A1 Shaft seal |
| 12/19/2007 | CN100356064C 涡旋式压缩机 Scroll compressor |
| 12/13/2007 | US20070286758 Screw Compressor Seal |
| 12/06/2007 | WO2007111903B1 Scroll machine using floating seal with backer |
| 12/06/2007 | WO2007111689A3 Sealing rings for abrasive slurry pumps |
| 12/06/2007 | US20070280845 Vacuum Pump |
| 12/05/2007 | CN100353066C Vortex machine |
| 11/22/2007 | US20070269326 Dual volume-ratio scroll machine |
| 11/21/2007 | CN200978802Y Oil-free scroll vacuum pump |
| 11/21/2007 | CN101074670A Oilless roots vacuum pump with mechanical seal |
| 11/21/2007 | CN101074669A Roots vacuum pump with mechanical seal leakage-proof |
| 11/21/2007 | CN101074668A Tip seal for scroll fluid machine |
| 11/20/2007 | US7296983 Gas compression apparatus capable of preventing lubricant leakage |
| 11/14/2007 | CN101072949A Scroll-type apparatus |
| 11/13/2007 | US7293970 Two-stage rotary compressor |
| 11/07/2007 | CN101067418A Scroll compressor sealing elements |
| 10/24/2007 | CN100344923C An adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 10/24/2007 | CN100344879C 涡旋压缩机 Scroll Compressor |
| 10/18/2007 | US20070240674 Multilobe rotary motion asymetric compression/expansion engine |
| 10/10/2007 | CN200958477Y Oil-free vortex vacuum pump |
| 10/04/2007 | WO2007111903A1 Scroll machine using floating seal with backer |
| 10/03/2007 | CN101046204A Scroll machine using floating seal with backer |
| 10/03/2007 | CN101046202A Floating sealer and the compressor therewith |
| 09/27/2007 | US20070224066 Variable displacement vane pump |
| 09/26/2007 | EP1837525A2 Scroll fluid machine |
| 09/26/2007 | CN200952472Y Round side bevel rotor pump |
| 09/20/2007 | DE112005002644T5 Flügelzellenpumpe mit variabler Fördermenge und Kraftreduktionskammer an Verdrängungsring Vane pump with variable displacement and force reduction chamber of displacement ring |
| 09/19/2007 | EP1835127A1 Positive-displacement fluid machine |
| 09/19/2007 | CN200949526Y Sealing device of vortex compressor |
| 09/19/2007 | CN200949525Y Rotary vane air conditioning compressor for vehicle |
| 09/05/2007 | EP1828615A1 Arrangement of a shaft with a slip-ring seal mounted thereon |
| 09/05/2007 | CN101029641A Large-flow high-pressure pump |
| 09/05/2007 | CN100335790C 空气压缩机 Air compressor |
| 08/29/2007 | EP1826409A2 Tip seal in a scroll fluid machine |
| 08/29/2007 | EP1825145A1 Scroll-type apparatus |
| 08/29/2007 | CN101027458A Fluid machine |
| 08/29/2007 | CN100334352C Diagnostic system of compressor |
| 08/22/2007 | EP1287296A4 System for controlling starting of air conditioner and control method thereof |
| 08/22/2007 | EP1287295A4 Control system for starting of air conditioner and control method thereof |
| 08/22/2007 | CN1333172C Scroll-type fluid displacement device for vacuum pump application |
| 08/22/2007 | CN1333171C Compressor |
| 08/15/2007 | EP1623121B1 Screw type liquid ring pump |
| 08/08/2007 | CN1330879C Roots pump |
| 08/01/2007 | EP1812686A1 Balanced rotary internal combustion engine or cycling volume machine |
| 08/01/2007 | CN101008321A Improved scroll-type fluid displacement apparatus with fully compliant floating scrolls |
| 07/26/2007 | US20070172376 Vacuum pump |
| 07/26/2007 | US20070172366 Screw type liquid ring pump |
| 07/26/2007 | DE102005042451B4 Vakuumpumpvorrichtung Vacuum pumping device |
| 07/25/2007 | EP1811179A2 Scroll fluid machine |
| 07/25/2007 | EP1809898A2 Rotary fluid-driven motor with sealing elements |
| 07/18/2007 | CN1327137C Rotary compressor |
| 07/18/2007 | CN101002021A Single-winged vacuum pump |
| 07/11/2007 | CN1995756A Scroll mechanism |
| 06/27/2007 | EP1800003A1 Screw compressor seal |
| 06/26/2007 | US7234923 Scroll fluid machine having a dust seal fitted within annular groove and having ends overlapped in the wider portion of the annular groove |
| 06/26/2007 | CA2483975C Rotary pistons |
| 06/21/2007 | WO2007041224A3 Hydrogen g-cycle rotary internal combustion engine |
| 06/20/2007 | CN2913681Y Inwardly retracting type seal ring |
| 06/14/2007 | WO2007065487A1 Helical screw compressor |
| 06/13/2007 | EP1795701A1 Fluid machine |
| 06/12/2007 | US7229261 Scroll compressor having an annular recess located outside an annular seal portion and another recess communicating with suction port of fixed scroll |
| 05/30/2007 | CN1971050A Vortex type compressor |
| 05/24/2007 | WO2006018848A3 Rotary fluid-driven motor with sealing elements |
| 05/23/2007 | CN1966983A Rotating and swing type compressor structure |
| 05/18/2007 | WO2007054162A1 Rotor pump |
| 05/17/2007 | US20070110605 Scroll compressor |
| 05/16/2007 | EP1785629A2 Rotary compressor |
| 05/16/2007 | CN2900867Y Lu's blower and rotor structure of Lu's vacuum pump |
| 05/16/2007 | CN1963211A Rotating blade compressor with circumferential sealing structure |
| 05/16/2007 | CN1316163C Sliding material and oiling-free vortex compressor |
| 05/10/2007 | US20070104604 Scoll fluid machine |