| Patents for F04C 25 - Adaptations for special use of pumps for elastic fluids (1,852) |
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| 11/21/2007 | CN101074669A Roots vacuum pump with mechanical seal leakage-proof |
| 11/14/2007 | CN100348865C Vacuum exhaust appts. and drive method of vacuum appts. |
| 10/31/2007 | EP1850008A1 Vane pump |
| 10/31/2007 | EP1850007A1 Vane pump |
| 10/31/2007 | EP1269024B1 Bacterial growth inhibition in a circulation system comprising a compressor |
| 10/31/2007 | DE102005061475B4 Wasserpumpe Water pump |
| 10/17/2007 | CN200961580Y Vacuum pump for vehicle |
| 10/11/2007 | DE102006016791A1 Vacuum pump, e.g. for a rotary piston pump, has a cylindrical operating chamber with a vane/blade fitted between an inlet and an outlet so as to slide in a guide slot on an eccentric rotary piston |
| 10/10/2007 | CN200958477Y Oil-free vortex vacuum pump |
| 09/26/2007 | CN100339598C Oil seal device of roots blower |
| 09/18/2007 | CA2293618C Screw spindle vacuum pump and operating method |
| 09/13/2007 | DE102006011913A1 Vacuum pump e.g. cold or warm vacuum pump, has vane tips radially protruding out of rotor on both sides and lying on inner peripheral surface of housing, and vane defining suction chamber and pressure chamber consisting of polyamide |
| 09/12/2007 | CN101033747A Pawl-type dry vacuum pump rotor |
| 09/11/2007 | CA2227191C Oil-sealed vane-type rotary vacuum pump with an oil pump |
| 09/11/2007 | CA2227168C Oil-sealed vane-type rotary vacuum pump with oil feed |
| 09/06/2007 | US20070207050 Screw Vacuum Pump |
| 09/04/2007 | US7263828 Fluid machine |
| 08/29/2007 | CN200940570Y 真空泵 Vacuum pump |
| 08/29/2007 | CN101025159A Revolving compression apparatus with double cyinder, single rolling piston |
| 08/22/2007 | CN2937560Y Vane vacuum pump |
| 08/22/2007 | CN1333172C Scroll-type fluid displacement device for vacuum pump application |
| 08/15/2007 | EP1252444B1 Drive mechanism for a screw pump |
| 08/14/2007 | US7255541 Fluid pump |
| 08/09/2007 | WO2007088989A1 Vacuum pump unit |
| 08/08/2007 | CN1330879C Roots pump |
| 08/08/2007 | CN101012827A Scroll type fluid machine |
| 08/02/2007 | DE102006004525A1 Improved efficiency rotary vacuum pump has the inlet time greater than the outlet time to reduce back streaming and increase pumping volume |
| 08/01/2007 | EP1813818A2 Evacuating apparatus |
| 08/01/2007 | CN2929261Y 高真空罗茨真空泵 High vacuum pumps Roots |
| 07/26/2007 | US20070172376 Vacuum pump |
| 07/26/2007 | US20070172361 Cleaning method of a rotary piston vacuum pump |
| 07/26/2007 | DE102005042451B4 Vakuumpumpvorrichtung Vacuum pumping device |
| 07/19/2007 | DE102006001733A1 Vakuumpumpe Vacuum pump |
| 07/05/2007 | WO2007074807A1 Screw-type fluid machine |
| 07/05/2007 | WO2007074795A1 Single stage roots vacuum pump and vacuum fluid transport system employing that single stage roots vacuum pump |
| 06/19/2007 | US7232295 Tempering method for a screw-type vacuum pump |
| 06/13/2007 | CN1321301C Fluid machine |
| 06/06/2007 | DE19882899B3 Schalldämpfer mit Lösungsmittel (LSM) Rückgewinnungseinrichtung Muffler with solvent (LSM) recovery device |
| 05/31/2007 | DE102005058129A1 Vacuum pump, comprises vane, pump housing and rotor rotatably mounted whereby vane has constant length and is one-piece design and is made of thermosetting plastic |
| 05/23/2007 | CN1969126A Screw pump and screw gear |
| 05/16/2007 | EP1785630A1 Pump |
| 05/16/2007 | DE202005021169U1 Vakuum-Anlage Vacuum system |
| 05/16/2007 | CN2900868Y Improved structure of vacuum pump rotor |
| 05/10/2007 | US20070104587 Evacuation apparatus |
| 05/09/2007 | CN2898371Y 真空泵 Vacuum pump |
| 05/09/2007 | CN1961153A Screw rotor and screw type fluid machine |
| 05/09/2007 | CN1959117A 真空泵 Vacuum pump |
| 05/08/2007 | US7214036 Screw type vacuum pump |
| 05/02/2007 | EP1780417A1 Screw vacuum pump |
| 05/02/2007 | CN1955476A Variable capacity multi-cylinder rotary compressor and its running method |
| 04/25/2007 | CN2893231Y 变螺距螺杆真空泵 Variable pitch screw vacuum pumps |
| 04/18/2007 | CN2890426Y Improved structure of slide valve vacuum pump |
| 04/11/2007 | CN1944526A Vacuum pump vane and its producing method |
| 04/05/2007 | WO2007036689A1 Method of pumping gas |
| 03/28/2007 | EP1767785A1 Screw pump and screw gear |
| 03/28/2007 | CN2883736Y Oil leakage preventing vacuum pump |
| 03/22/2007 | DE10357805B4 Auslass-Rückschlagventil für eine Fahrzeug-Vakuumpumpe Outlet check valve for a vehicle vacuum pump |
| 03/20/2007 | US7192262 Twin-shaft vacuum pump and method of forming same |
| 03/15/2007 | DE102005042451A1 Vacuum pumping device for use as oil-lubricated rotary vane pump, has drive and rotary units arranged such that transient area has sealing units separating conveying area from drive area, where one of sealing units is ferrous fluid seal |
| 03/06/2007 | US7186098 Eccentric pump and method for operation of said pump |
| 02/07/2007 | EP1750011A1 Screw rotor and screw type fluid machine |
| 01/18/2007 | WO2007006666A1 Rotary vacuum pump |
| 01/11/2007 | DE202006000048U1 Packing system for e.g. deep-frozen good, has vacuum pump connected with air-tight closable freezer bags made of flexible plastic and for evacuating freezer bags after filling with deep-freeze goods, where pump is operated using hand |
| 01/02/2007 | US7156922 Multi-chamber installation for treating objects under vacuum, method for evacuating said installation and evacuation system therefor |
| 12/27/2006 | CN2851656Y 便携式充气泵 Portable Air Pump |
| 12/26/2006 | US7153093 Vacuum pump |
| 12/21/2006 | DE102005015721B3 Vakuumpumpe Vacuum pump |
| 12/20/2006 | CN1880769A Tooth profile of screw rotor in spiral vacuum pump |
| 11/29/2006 | EP1488107B1 Eccentric pump and method for operation of said pump |
| 11/29/2006 | CN1871436A 旋转式干式真空泵 Rotary dry vacuum pump |
| 11/28/2006 | US7140846 Vacuum pump having main and sub pumps |
| 11/28/2006 | CA2183595C Perfected twin-screw pump, particularly suitable for the pumping of biphase fluids in a submarine environment |
| 11/23/2006 | WO2006122516A1 Vane-cell pump |
| 11/22/2006 | CN2839651Y Rotary-vane oil-saving vacuum pump |
| 11/15/2006 | EP1722104A2 Rotors for a screw compressor |
| 11/15/2006 | CN2837559Y Single-stage rotary vane type vacuum pump |
| 11/15/2006 | CN1862020A Paw type dry vacuum pump |
| 11/08/2006 | CN1283924C Fluid pump system |
| 10/25/2006 | CN1281866C Service life forcasting system of wshirler, service life forcasting method of whirler and manufacturing device with whirler |
| 10/18/2006 | CN1847660A Rapidly pumping out an enclosure while limiting energy consumption |
| 10/12/2006 | DE102005015685A1 Rotor for a vacuum pump has a single-piece positive displacer held by two shaft journals on both ends of the positive displacer |
| 10/11/2006 | CA2542616A1 Vacuum pump |
| 10/11/2006 | CA2542575A1 Vacuum pump |
| 10/10/2006 | US7118353 Fluid transport system and method therefor |
| 10/05/2006 | DE20221619U1 Method for reducing sound level of vacuum pump has a controlled bleed to provide an air ballast to slow the action of the non return valve |
| 10/04/2006 | EP1311763B1 Pressure seal for a vacuum pump |
| 10/04/2006 | CN1278387C Diagnosing method for service life of semiconductor manufacturing apparatus |
| 10/04/2006 | CN1278041C Vacuum pump |
| 09/28/2006 | US20060216189 Screw vacuum pump |
| 09/26/2006 | US7111843 Sheet-processing machine having a suction air producing device |
| 09/21/2006 | WO2006097679A1 Vacuum pumping arrangement |
| 09/20/2006 | CN1276177C Service life forcasting method of whirler and manufacturing device with whirler |
| 09/19/2006 | US7108492 Roots pump |
| 09/12/2006 | US7104061 Fluid machine |
| 09/06/2006 | CN1273741C Two-shaft vacuum pump |
| 08/24/2006 | WO2006087904A1 Vane pump |
| 08/24/2006 | WO2006087903A1 Vane pump |
| 08/24/2006 | US20060188383 Vacuum pump |
| 08/23/2006 | EP1363719B1 Oil separator for pumps overflowing with oil |
| 08/23/2006 | CN2809273Y Multi-stage dry type vacuum pump |