| Patents for F04B 25 - Multi-stage pumps specially adapted for elastic fluids (1,208) |
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| 11/28/2001 | EP0922163B1 Vacuum piston pump with an inlet and an outlet |
| 11/22/2001 | WO2001088374A1 Reciprocating compressor |
| 11/15/2001 | DE19961646C1 Schwingungsarmer, zweistufiger Tauchkolbenverdichter Low vibration, two-stage piston compressor diving |
| 11/14/2001 | EP1153210A1 Compressor system for producing compressed air |
| 10/04/2001 | US20010025509 Air conditioning system for vehicle |
| 10/04/2001 | EP1137882A1 Low pressure ratio piston compressor |
| 09/27/2001 | WO2001071188A1 Displacement type machinery |
| 09/25/2001 | US6293761 Variable displacement swash plate type compressor having pivot pin |
| 09/19/2001 | CN1071411C Device for guiding and centering a machine component |
| 08/02/2001 | DE10103095A1 Klimaanlage für ein Fahrzeug Air conditioner for a vehicle |
| 07/19/2001 | WO2001051809A1 Multistage type piston compressor |
| 06/28/2001 | WO2001046592A1 Dry compressing vacuum pump having a gas ballast device |
| 06/28/2001 | WO2001046587A1 Multistage compressor, and multistage compression method |
| 06/28/2001 | WO2001046586A1 Multistage compressor |
| 06/28/2001 | WO2001046585A1 Dual-stage, plunger-type piston compressor with minimal vibration |
| 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 |
| 06/28/2001 | DE19960152A1 Verdichteranlage zur Erzeugung von Druckluft Compressor unit for generating compressed air |
| 06/27/2001 | EP1111236A2 Variable displacement swash plate type compressor having pivot pin |
| 06/27/2001 | EP1111235A2 Hinge for a swash plate of a variable capacity compressor |
| 06/26/2001 | US6250204 Compressor, in particular for a vehicle air conditioning system |
| 06/21/2001 | WO2001044635A1 Compressor system for producing compressed air |
| 05/16/2001 | CN1295194A Oblique disk type compressor piston |
| 05/16/2001 | CN1295193A Oblique disk type compressor piston with hollow head of non-acial symmetrical internal configuration |
| 05/08/2001 | US6227815 Pressure control for a reciprocating compressor |
| 04/26/2001 | DE10039347A1 Hydraulic pump with variable delivery amount with pump body and cam ring supported in body so that it can swivel in direction and cam ring defines pump chamber and first and second fluid |
| 04/19/2001 | WO2001027475A1 Multi-stage diaphragm-type compressor |
| 04/11/2001 | CN1290814A Method for producing compressor piston |
| 04/10/2001 | US6213727 Variable displacement compressor and outlet control valve |
| 04/05/2001 | DE19945241A1 Verfahren zur schonenden Verdichtung von hochreinen Gasen Method for gentle compression of high purity gases |
| 04/04/2001 | EP1088990A2 Composite swash plate compressor piston |
| 03/28/2001 | EP1087135A2 Non-axisymmetric hollow swash plate compressor piston |
| 03/28/2001 | EP1087134A2 Method of producing compressor piston |
| 03/28/2001 | EP1087133A1 Process for the compression of purified gases |
| 03/22/2001 | DE10040903A1 High pressure compressor, especially for filling pistol, sports weapon cartridges, has high pressure stage piston with oil collection grooves, low pressure stage piston with piston rod aperture |
| 03/21/2001 | EP1085208A2 Piston compressor |
| 03/21/2001 | CN1288108A High pressure compressor |
| 03/21/2001 | CN1288107A Compression device |
| 03/20/2001 | US6203285 Compressor intercooler unloader arrangement |
| 03/14/2001 | EP1083334A2 Multistage high pressure compressor |
| 03/14/2001 | CN1287201A Forming equipment for pile with branch and/or bearing disc |
| 03/13/2001 | CA2217978C High pressure gas compressor |
| 03/07/2001 | CN1286355A Wobbler type compressor piston with as-cast surface zone in inner surface of bottom of its neck |
| 02/28/2001 | EP1079109A2 Hollow cast piston for swash plate compressor |
| 02/14/2001 | CN1283746A Clutchless volume variable compressor |
| 02/14/2001 | CN1283745A Fixed discharge single rotary oblique disk refrigeriting compressor |
| 02/14/2001 | CN1283744A Fixed discharge single rotary oblique disk refrigeriting compressor |
| 02/07/2001 | EP1074738A2 Clutchless variable-capacity type compressor |
| 02/07/2001 | EP1074737A2 Lubrication layer of piston seat of a swash-plate refrigerant compressor |
| 02/07/2001 | EP1074736A2 Piston of a swash plate compressor |
| 02/06/2001 | US6183211 Two stage oil free air compressor |
| 01/25/2001 | WO2001006123A1 Method and compressor module for compressing a gas stream |
| 01/25/2001 | DE19933989A1 Verfahren und Kompressormodul zum Verdichten eines Gasstromes Method and compressor module for compressing a gas stream |
| 01/11/2001 | WO2001002725A1 Two-stage compressor with torque reducing crankshaft |
| 12/12/2000 | US6158972 Two stage pulse pump |
| 11/23/2000 | WO2000070222A1 Piston vacuum pump |
| 11/16/2000 | DE19921711A1 Piston vacuum pump has pistons mounted on and coupled to crankshaft so that complete or approximately complete balancing of oscillating inertial forces (first order forces) is achieved |
| 09/26/2000 | US6123516 Vacuum pump |
| 08/30/2000 | EP1030971A1 High pressure fuel supply system for natural gas vehicles |
| 08/23/2000 | CN1263995A Rotating oblique disc of oblique disc compressor |
| 08/16/2000 | EP1028254A2 Two stage oil free air compressor |
| 07/26/2000 | EP1022120A2 Press plate and method for producing it |
| 06/21/2000 | EP1010771A1 Swash-plate of swash-plate type compressor |
| 06/15/2000 | WO2000034656A1 Low pressure ratio piston compressor |
| 06/06/2000 | US6071085 Gas ballast system for a multi-stage positive displacement pump |
| 05/23/2000 | US6065947 Two-stroke operable pump |
| 04/20/2000 | DE19840354C1 Piston compressor for compressed air supply in automobile has hydraulic space coupled to automobile hydraulic system for providing drive force for reciprocation of compressor piston |
| 04/18/2000 | CA2182339C Thermostatically controlled intercooler system for a multiple stage compressor and method |
| 02/23/2000 | EP0980976A2 Variable displacement compressor and outlet control valve |
| 02/23/2000 | CN1245256A Variable volume compressor and outlet controlling valve |
| 02/22/2000 | US6027316 Air pump capable of inflating an inflatable object regardless of air pressure level in the inflatable object |
| 02/02/2000 | CN1243563A Vacuum pump |
| 01/27/2000 | DE19932433A1 Economy improvement process for displacement compressors, involving charging normally free-induction compressors using low-pressure centrifugal pre-compressors |
| 01/25/2000 | US6017201 Air pump with a hidden extension tube |
| 01/19/2000 | EP0972938A2 Gas ballast device for a multistage positive displacement pump |
| 01/13/2000 | DE19831123A1 Gasballasteinrichtung für mehrstufige Verdrängerpumpen Gas ballast for multi-stage displacement pumps |
| 12/22/1999 | EP0964999A1 Vacuum pump |
| 12/07/1999 | US5997256 Dual stage, dual mode air pump |
| 10/27/1999 | CN2345726Y Micro-piston-type gas compressor |
| 10/07/1999 | DE19822727C1 Tire pump for inflating a bicycle tire |
| 08/24/1999 | CA2012776C Reciprocating compressor |
| 08/12/1999 | DE19812796A1 Compression of low-pressure fuel gas feed for a supercharged , ultra-lean mixture, gas engine |
| 08/03/1999 | US5931645 Multistage swash plate compressor having two different sets of cylinders in the same housing |
| 07/13/1999 | US5921106 Separating gas mixtures |
| 06/23/1999 | CN1043805C Sleeve piston pump |
| 06/16/1999 | EP0922165A1 Inlet valve with a choke effect and multi-stage piston vacuum pump |
| 06/16/1999 | EP0922163A1 Vacuum piston pump with an inlet and an outlet |
| 06/16/1999 | CN2324314Y Turbine refrigerating compressor for air conditioner of vehicle |
| 05/26/1999 | CN1217433A Piston connection device for sealed compressor |
| 05/26/1999 | CN1217431A Bearing jointing structure of sealed compressor |
| 05/20/1999 | WO1999024714A1 High pressure fuel supply system for natural gas vehicles |
| 05/12/1999 | DE19749729A1 Piston vacuum pump |
| 04/07/1999 | CN2313071Y Energy-saving refrigerating compressor |
| 04/07/1999 | CN2313070Y Structure-improved air compressor |
| 03/24/1999 | CN2311632Y Silent rotary refrigerator compressor |
| 03/23/1999 | US5885060 Thermostatically controlled intercooler system for a multiple stage compressor and method |
| 03/23/1999 | US5884488 High pressure fuel supply system for natural gas vehicles |
| 03/17/1999 | CN1042564C Electrically driven hermetic compressor |
| 03/10/1999 | EP0804684B1 Compressor |
| 03/09/1999 | US5879145 Integrated cylinder liner and valve plate for a compressor |
| 02/24/1999 | CN2308722Y 空气压缩机 Air compressor |