| Patents for F04C 25 - Adaptations for special use of pumps for elastic fluids (1,852) |
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| 09/20/2001 | US20010022943 Screw rotors and screw machine |
| 09/19/2001 | EP1134357A2 Screw rotors and screw machine |
| 09/18/2001 | US6290472 Rotary compressor with vane body immersed in lubricating fluid |
| 09/12/2001 | CN1312437A 干式真空泵 Dry vacuum pump |
| 09/05/2001 | EP1130264A2 Compound vacuum pumps |
| 09/05/2001 | EP1130263A2 Helical gear vacuum pump |
| 09/05/2001 | EP1129294A1 Scroll-type fluid displacement device for vacuum pump application |
| 08/14/2001 | US6273696 Screw spindle vacuum pump and operating method |
| 08/09/2001 | WO2001057401A1 Drive mechanism for a screw pump |
| 08/09/2001 | DE10004373A1 Antrieb einer Schraubenspindelpumpe Drive a screw pump |
| 08/09/2001 | CA2398263A1 Drive for a screw pump |
| 08/08/2001 | EP1121533A1 Liquid ring pump |
| 07/25/2001 | EP1117933A1 Vacuum pump |
| 07/11/2001 | EP0904494B1 Scroll-type vacuum pumping apparatus |
| 07/10/2001 | US6257855 Screw fluid machine |
| 07/10/2001 | US6257854 Double screw rotor assembly having means to automatically adjust the clearance by pressure difference |
| 07/05/2001 | WO2001048385A1 Screw vacuum pump with a coolant circuit |
| 07/05/2001 | WO2001048383A1 Cooled screw vacuum pump |
| 07/03/2001 | US6254362 Vacuum pump with dust collecting function |
| 06/28/2001 | WO2001046592A1 Dry compressing vacuum pump having a gas ballast device |
| 06/28/2001 | DE19963172A1 Screw-type vacuum pump has shaft-mounted rotors each with central hollow chamber in which are located built-in components rotating with rotor and forming relatively narrow annular gap through which flows cooling medium |
| 06/28/2001 | DE19963171A1 Screw-type vacuum pump used in cooling circuits has guide components located in open bores in shafts serving for separate guiding of inflowing and outflowing cooling medium |
| 06/28/2001 | DE19962445A1 Dry compressing vacuum pump has gas ballast device with valve that only opens when difference between atmospheric pressure and pressure on pump side of valve exceeds set value |
| 06/27/2001 | EP1111243A2 Screw vacuum pump |
| 06/20/2001 | EP1108143A1 Dry-compressing screw pump |
| 06/12/2001 | US6244841 Vacuum pumps |
| 06/07/2001 | US20010002981 Rotary compressor with vane body immersed in lubricating fluid |
| 06/05/2001 | US6241490 Multirotor vacuum pump |
| 05/31/2001 | WO2001038742A1 Vacuum pump comprising an outlet |
| 05/24/2001 | US20010001639 Scroll vacuum pump with improved performance |
| 05/23/2001 | EP1101942A2 Evacuating apparatus |
| 05/23/2001 | EP0788402B1 An arrangement in autoclaving systems |
| 05/22/2001 | US6233942 Condensing turbine |
| 05/03/2001 | WO2001006095A3 High efficiency turbine |
| 04/25/2001 | CN1065026C Rotative vacuum pump composed of two parts |
| 04/17/2001 | US6217305 Screw pumps |
| 03/13/2001 | US6200116 Vacuum pumps |
| 03/06/2001 | US6196810 Multistage vacuum pump assembly |
| 02/27/2001 | US6193487 Scroll-type fluid displacement device for vacuum pump application |
| 02/15/2001 | WO2001011239A2 Vacuum pump aggregate |
| 02/15/2001 | DE19937704A1 Vakuumpumpenaggregat Vacuum pump unit |
| 02/14/2001 | CN2419392Y Vacuum pump working at bay condition |
| 01/25/2001 | WO2001006095A2 High efficiency turbine |
| 01/25/2001 | CA2379761A1 High efficiency turbine |
| 01/24/2001 | EP1070848A1 Positive displacement machine for compressible fluids |
| 01/24/2001 | CN1061131C Device for pumping high-vacuum degree |
| 12/20/2000 | EP1061260A1 Positive displacement machine for compressible fluids |
| 12/05/2000 | US6155502 Nozzle device for purging a vacuum pump |
| 11/22/2000 | EP1054160A1 Positive displacement machine for compressible fluids |
| 11/21/2000 | US6149414 Oil-sealed vane-type rotary vacuum pump with an oil pump |
| 11/21/2000 | US6149405 Double wrap dry scroll vacuum pump having a compressed gas cooling passage disposed in the scroll shaft |
| 10/12/2000 | WO2000060428A1 System for regulating pressure in a vacuum chamber, vacuum pumping unit equipped with same |
| 10/11/2000 | EP1043645A1 Pressure control system for a vacuum chamber, vacuum pumping unit provided with such a system |
| 09/13/2000 | EP1034951A2 Idling engine speed control apparatus |
| 08/30/2000 | CN2394029Y Slide vacuum-pressure composite air pump |
| 08/02/2000 | EP1024290A1 Vacuum pump systems |
| 07/26/2000 | EP1021654A1 Screw vacuum pump provided with rotors |
| 07/26/2000 | EP1021653A1 Cooled screw vacuum pump |
| 07/20/2000 | DE10000755A1 Slider vacuum pump for vehicle power brake systems has pressure reducing device in displacement chamber to prevent pressure rise and resulting break of slider when rotary shaft rotates in direction opposite from normal |
| 07/11/2000 | US6088508 Method of operating vacuum pump |
| 06/29/2000 | DE19957024A1 Multistep root pump for pumping plant, has two pairs of rotors which are individually provided in corresponding pump chambers and sequentially rotate in longitudinal direction |
| 06/28/2000 | EP1014427A2 Processing apparatus having integrated pumping system |
| 06/15/2000 | DE19847681C1 Flüssigkeitsringpumpe Liquid ring pump |
| 06/14/2000 | CN1256743A Improved tip seal for scroll-type vacuum pump |
| 06/08/2000 | DE19955262A1 Multi-axle gas compression pump arrangement has parallel shafts with drive rotor and with driven rotor, connected via drive belt to transmit rotary movement |
| 06/07/2000 | EP1006281A1 Multi-stage roots pump |
| 06/07/2000 | CN1053266C Rotative vacuum pump |
| 05/30/2000 | US6068459 Tip seal for scroll-type vacuum pump |
| 05/11/2000 | DE19952902A1 Electrically-operated fluid pump has common cooling circuit used for cooling pump unit, intermediate drive transmission, electric motor and current regulator |
| 05/02/2000 | US6056510 Multistage vacuum pump unit |
| 04/27/2000 | WO2000023714A1 Liquid ring pump |
| 04/20/2000 | WO2000022302A1 Scroll-type fluid displacement device for vacuum pump application |
| 04/18/2000 | US6050792 Multi-stage scroll compressor |
| 04/18/2000 | US6049997 Heat generation through mechanical molecular gas agitation |
| 04/06/2000 | WO2000019104A1 Vacuum pump |
| 03/29/2000 | EP0988453A1 Screw spindle vacuum pump and operating method |
| 03/09/2000 | WO2000012900A1 Dry compressing screw pump |
| 03/09/2000 | WO2000012899A1 Dry-compressing screw pump |
| 03/09/2000 | CA2327080A1 Dry-compressing screw pump |
| 03/02/2000 | DE19839501A1 Trockenverdichtende Schraubenspindelpumpe Dry-compressing screw pump |
| 02/29/2000 | US6030181 Vacuum apparatus and a method of controlling a suction speed thereof |
| 02/22/2000 | US6027317 Scroll type machine |
| 02/08/2000 | US6022202 Spiral vacuum pump having a toothed circular translation movement limiter device |
| 02/02/2000 | EP0975873A1 Improved tip seal for scroll-type vacuum pump |
| 02/02/2000 | CN2361882Y High-vacuum vane pump |
| 02/01/2000 | US6019585 Oil-sealed vane-type rotary vacuum pump with oil feed |
| 01/19/2000 | EP0851980B1 Rotary vane pump |
| 01/13/2000 | DE19829618A1 Twin shaft rotary piston pump for simultaneously producing vacuum and excess pressure |
| 12/22/1999 | EP0965758A2 Vacuum pump |
| 12/22/1999 | EP0965757A2 Vacuum pumps |
| 12/22/1999 | EP0965756A2 Screw pump |
| 12/01/1999 | CN1046990C Rotative fluid equipment |
| 11/10/1999 | CN2348152Y Wear and corrosion-resisting fitting for beam-pumping unit |
| 11/09/1999 | US5979075 Heat generation through mechanical molecular gas agitation |
| 11/02/1999 | US5975857 Process for operating a dry-compression vacuum pump as well as a suitable vacuum pump for implementation of this process |
| 10/27/1999 | EP0834017B1 Vacuum pump |
| 10/27/1999 | CN2345742Y Thickened oil pump |
| 10/07/1999 | WO1999050561A1 Vacuum pump |
| 09/30/1999 | WO1999049219A1 Screw rotor type wet vacuum pump |
| 09/30/1999 | WO1999049218A1 Discharge silencer provided with drain recovering function |