| Patents for F04C 25 - Adaptations for special use of pumps for elastic fluids (1,852) |
|---|
| 12/03/2008 | CN100439716C Involute and straight claw type rotor structure for oilless vacuum pump |
| 11/27/2008 | DE102008024442A1 Vacuum pump used as a vane pump comprises a free-running unit with a fall pin which moves across the rotary axis of a rotor within the unit |
| 11/27/2008 | DE102008024441A1 Vacuum pump used as a vane-cell pump comprises an interlocking connection having a locking piston which is impinged with an air pressure or oil pressure to move the piston from a resting position into an interacting position |
| 11/18/2008 | US7452191 Vacuum pump and method for generating sub-pressure |
| 11/12/2008 | CN100432439C Hand-held vacuum pump and automated urinary drainage system using that vacuum pump |
| 11/06/2008 | WO2008103300A3 Flexible impeller pumps for mixing individual components |
| 11/05/2008 | CN201144817Y Circulating cooling sliding vane rotary vacuum pump |
| 10/30/2008 | WO2008129317A1 Vacuum pump |
| 10/29/2008 | CN101294566A Scroll fluid machine |
| 10/23/2008 | DE102008019449A1 Bearing for dry-compressing screw pump, has non-fixed bearing with inner ring race firmly placed on cylinder sleeve, and inner ring of non-fixed bearing sealed with sealing ring between cylinder sleeve and spindle rotor shaft end |
| 10/16/2008 | DE102007018247A1 Vakuumpumpe Vacuum pump |
| 10/16/2008 | DE102007016025A1 Position displacement vacuum pump e.g. roots vacuum pump, for use in chemical vapor deposition system, has trap surface defining boundary to collecting area with height that is larger than half of minimum clearance provided for pump |
| 10/15/2008 | EP1979619A1 Vacuum pump unit |
| 10/02/2008 | WO2008117082A1 Vacuum pump |
| 10/01/2008 | CN100422561C Cooled screw-type vacuum pump |
| 09/24/2008 | CN101270750A Mechanical vacuum system in grease processing technique |
| 09/18/2008 | US20080226481 Screw Vacuum Pump |
| 09/16/2008 | CA2417051C Twin screw rotors and displacement machines containing the same |
| 09/10/2008 | EP1967735A1 Single stage roots vacuum pump and vacuum fluid transport system employing that single stage roots vacuum pump |
| 09/10/2008 | EP1967734A1 Screw-type fluid machine |
| 09/10/2008 | EP1967610A1 Handling device for precursor |
| 09/10/2008 | CN101260885A Oil-free fluid machine having two or more rotors |
| 09/03/2008 | EP1553301B1 Vane type vacuum pump |
| 08/28/2008 | US20080206072 Vacuum Apparatus |
| 08/28/2008 | CA2678589A1 Flexible impeller pumps for mixing individual components |
| 08/27/2008 | CN201106558Y Oil-free scroll vacuum pump |
| 08/21/2008 | CA2678337A1 Reciprocating compressor with inlet booster for cng station and refueling motor vehicles |
| 08/20/2008 | CN101245784A Drive transmission mechanism and oil-free fluid machine equipped with the mechanism |
| 08/14/2008 | US20080193317 Screw Rotor and Screw Fluid Machine |
| 08/06/2008 | CN201096089Y Automobile direct current electric vacuum pump |
| 07/31/2008 | DE102007005216A1 Vacuum pump, particularly vane pump for compressible medium, has external housing, which separates pump inner area from pump outer area and in which outlet is formed for medium to connect pump inner area with pump outer area |
| 07/30/2008 | CN101230858A Evacuation apparatus |
| 07/30/2008 | CN100406737C Vacuum pump with turbination |
| 07/23/2008 | CN201090445Y Two-stage rotary blade type mechanical vacuum pump |
| 07/23/2008 | CN201090443Y Single-stage rotary blade type mechanical vacuum pump |
| 07/23/2008 | CN101225821A Fluid machine connected to a drive source via a magnetic coupling |
| 07/23/2008 | CN100404864C Metering pump used for transporting molten metal |
| 07/16/2008 | CN100402826C Method and system for avoiding anomaly stop of production device |
| 07/10/2008 | DE102007001593A1 Vakuumpumpe Vacuum pump |
| 07/03/2008 | DE102007001316A1 Conveyor system dust removing device for e.g. treating plate goods, has root blower that is connected at outlet side with filter and/or screening device, which runs parallel to axis direction of rotor |
| 07/02/2008 | CN201080914Y Double screw rod vacuum fluid pump |
| 07/02/2008 | CN101210562A Rotary roller cycloid vacuum pump |
| 07/02/2008 | CN101210556A Roots dry type vacuum pump rotor capable of directly discharging to air and processing technique thereof |
| 06/19/2008 | DE102006058843A1 Vakuumpumpe Vacuum pump |
| 06/19/2008 | DE102006058842A1 Vakuumpumpe mit Lüfter Vacuum pump with fan |
| 06/19/2008 | DE102006058840A1 Vakuumpumpe Vacuum pump |
| 06/19/2008 | DE102006058839A1 Schmiermittelgedichtete Drehschiebervakuumpumpe Lubricant sealed rotary vane vacuum pump |
| 06/18/2008 | EP1931880A1 Method of pumping gas |
| 06/18/2008 | CN201075752Y Electrical machine for vacuum pump |
| 06/18/2008 | CN201074591Y Multilevel Roots dry vacuum pump for straight discharging atmosphere |
| 06/18/2008 | CN101203677A 旋转式真空泵 Rotary vacuum pump |
| 06/17/2008 | CA2449158C Liquid seal pump of the helical screw type |
| 06/04/2008 | EP1927757A1 Drive transmission mechanism between two or more rotary shafts and oil-free fluid machine equipped with the mechanism |
| 05/29/2008 | DE102007056316A1 Pump, especially vane-cell vacuum pump for vehicle brake servo systems, has switching device which acts upon sprag and even during rotation of drive in working direction of pump effects decoupling of rotor from drive |
| 05/29/2008 | DE102006056005A1 Eccentric fluid ring compressor for high pressure application, has hub projecting axially over hold-up locking ring and comprising locking plates, and cylinder comprising another pair of locking plates perpendicular to hub |
| 05/27/2008 | CA2314124C Displacement machine for compressible media |
| 05/21/2008 | CN101182845A Dry-type vacuum pump |
| 05/01/2008 | US20080101975 Vane Pump |
| 04/24/2008 | DE102007010729B3 Vacuum pump for use in engine of motor vehicle, has sealing body flexibly designed and fixed at air discharge opening at front and rear ends of opening in rotation direction of rotor, where body lies permanently at opening |
| 04/23/2008 | CN201050481Y Mechanical seal leakage-free Root's vacuum pump |
| 04/23/2008 | CN201050480Y Mechanical seal oil-free Root's vacuum pump |
| 04/09/2008 | CN101158353A Composite dry vacuum pump having roots and screw rotor |
| 04/09/2008 | CN100380103C Manufacturing apparatus and life predictive method for whirler |
| 04/09/2008 | CN100379894C Multi-chamber installation for treating objects under vacuum, method for evacuating said installation and evacuation system therefor |
| 04/06/2008 | CA2605039A1 Progressing cavity pump with wobble stator and magnetic drive |
| 04/02/2008 | EP1906023A1 Evacuation apparatus |
| 04/02/2008 | EP1906022A1 Evacuation apparatus |
| 04/02/2008 | EP1290346B1 Temperature control with constant cooling flow and temperature for vacuum generating device |
| 04/02/2008 | CN101153585A Evacuation apparatus |
| 03/27/2008 | DE102006045022A1 Anordnung mit Vakuumgerät und Verfahren zu derem Betrieb Arrangement with vacuum apparatus and method for operating alia, |
| 03/19/2008 | EP1900943A1 Method of controlling the stopping operation of vacuum pump and device therefor |
| 03/06/2008 | DE102006039529A1 Verfahren zur Abreaktion selbstentzündlicher Stäube in einer Vakuumpumpvorrichtung Method for abreaction spontaneously combustible dust in a vacuum pump device |
| 02/27/2008 | CN201027650Y Roots vacuum pump |
| 02/21/2008 | DE102006038419A1 Rotorkühlung für trocken laufende Zweiwellen-Vakuumpumpen bzw. -Verdichter Rotor cooling for dry-running two-shaft vacuum pumps and compressors |
| 02/21/2008 | DE102006038418A1 Dry running rotary slide vacuum pump or compressor has rotor in housing driven by drive shaft and slides in slots of rotor sliding towards outside in peripheral direction |
| 02/20/2008 | EP1890038A2 Screw pump |
| 02/20/2008 | EP1055823B1 Vane type vacuum pump for automobiles |
| 02/20/2008 | CN100370141C Vane type vacuum pump |
| 02/14/2008 | US20080038132 Rotary Dry Vacuum Pump |
| 02/13/2008 | EP1886025A1 Vane-cell pump |
| 02/13/2008 | CN101122291A Screw pump |
| 02/06/2008 | CN101120175A Vane pump |
| 02/06/2008 | CN101120174A Vane pump |
| 01/31/2008 | DE102006016791B4 Vakuumpumpe Vacuum pump |
| 01/30/2008 | CN201013593Y Turning compressing device having double cylinder and single rolling piston |
| 01/24/2008 | DE10197270B4 Vakuumpumpe Vacuum pump |
| 01/22/2008 | CA2308665C Displacement machine for compressible media |
| 01/09/2008 | EP1397595B1 Liquid seal pump of the helical screw type |
| 01/09/2008 | CN100360807C Rotary blade vacuum pump |
| 01/02/2008 | CN100359176C Swirl fluid machinery |
| 12/27/2007 | DE19882986B4 Trockenvakuumpumpe Dry vacuum pump |
| 12/26/2007 | CN200996380Y Sliding-valve vacuum pump with single-stage and multi-cylinders |
| 12/20/2007 | DE10004373B4 Trockenverdichtende Schraubenpumpe Dry-screw pump |
| 12/19/2007 | CN200993102Y Automobile engine vacuum pump |
| 12/19/2007 | CN200993101Y Roots dry vacuum pump rotor structure switahle for discharge directly into atmosphere |
| 12/12/2007 | EP1307657B1 Two-shaft vacuum pump |
| 11/21/2007 | EP1502029B1 Vacuum pump and method for generating sub-pressure |
| 11/21/2007 | CN200978804Y All-dry type special rotary vane vacuum pump |
| 11/21/2007 | CN200978802Y Oil-free scroll vacuum pump |
| 11/21/2007 | CN101074670A Oilless roots vacuum pump with mechanical seal |