| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
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| 03/11/2004 | DE10239428A1 Zahnradförderpumpe Gear pump |
| 03/11/2004 | DE10239426A1 Zahnradförderpumpe Gear pump |
| 03/10/2004 | EP1396639A1 Gerotor pump |
| 03/10/2004 | CN1481471A Fluid power transfer device |
| 03/10/2004 | CN1480650A Inner gearing dual rotors screw pump |
| 03/09/2004 | US6702703 Lubrication pump for inter-axle differential |
| 03/04/2004 | WO2002097274A8 Vane pump rotor |
| 03/03/2004 | EP1394416A2 Dual discharge hydraulic pump and system therefor |
| 03/03/2004 | CN1140712C Toothed screw bolt |
| 03/03/2004 | CN1140711C Toothed screw bolt |
| 03/03/2004 | CN1140710C Screw bolt with type of profile |
| 03/02/2004 | US6699024 Hydraulic motor |
| 02/26/2004 | WO2003093677A3 Hydraulic motor for use in high-pressure environment |
| 02/26/2004 | US20040037729 Pump |
| 02/26/2004 | US20040037728 Roller vane pump incorporating a bearing bush |
| 02/26/2004 | US20040037726 G-rotor pump |
| 02/26/2004 | US20040037711 Oil free screw compressor |
| 02/26/2004 | DE10233582A1 Vane cell pump has means for swirl-free orientated flow guiding of fluid and which comprise different spherical form of kidney shaped suction slots in control plate and end plate |
| 02/25/2004 | EP1163450B1 Pump for generating pressure or negative pressure |
| 02/25/2004 | CN2604541Y Cycloid oil pump for motor engine |
| 02/25/2004 | CN2604540Y Engine oil pump for motorcycle lubrication |
| 02/25/2004 | CN2604539Y Engine oil pump for motorcycle lubrication |
| 02/25/2004 | CN2604538Y Oil pump for motorcycle engine |
| 02/24/2004 | US6695604 Automotive fuel pump gear assembly having lifting and lubricating features |
| 02/24/2004 | US6695603 Eccentric toothed rotor set having planetary gears on the inner rotor |
| 02/19/2004 | WO2004015271A1 Non-proportional flow control valve for a vane pump |
| 02/19/2004 | DE10234621A1 Regulator for variable vane cell pump for use in vehicle power steering systems, has pressure limiting for pressure side supply connection integrated into pump actuator control to reduced transport quantity depending on limiting pressure |
| 02/18/2004 | CN1475672A Oil Pump rotor |
| 02/17/2004 | US6692243 Screw compression flow guide for discharge loss reduction |
| 02/17/2004 | CA2255014C Progressing cavity pump |
| 02/12/2004 | US20040030216 Rotary pump with hydrodynamically suspended impeller |
| 02/12/2004 | US20040028547 Rotary pump |
| 02/12/2004 | US20040028546 Eccentric screw-type pump |
| 02/12/2004 | US20040026077 Downhole moineau pump assembly |
| 02/12/2004 | DE19917506B4 Verstellbare Flügelzellenpumpe Variable displacement vane pump |
| 02/12/2004 | DE19500542B4 Drehkolbenpumpe Rotary pump |
| 02/12/2004 | DE10305585B3 Rotary pump for hydraulic fluid has slide between compression and induction connections to alter effective size of at least one connection |
| 02/12/2004 | DE10245814B3 Internal-gear pump e.g. for pumping engine oil has at least one recess in feet of external teeth extending to one endface of external teeth |
| 02/11/2004 | EP1388131A1 Improved fluid metering device |
| 02/11/2004 | EP1387959A2 Fluid controlled pumping system and method |
| 02/11/2004 | CN2603232Y Leakage-resistant lubricant-pump |
| 02/10/2004 | US6688869 Extensible vane motor |
| 02/10/2004 | US6688866 Gerotor pump with variable tolerance housing |
| 02/10/2004 | US6688865 Vane type fluid machinery having a deformable seal portion on the vane |
| 02/10/2004 | US6688851 Oil pump for controlling planetary system torque |
| 02/10/2004 | US6688498 Hot melt adhesive supply system with independent gear pump assemblies |
| 02/09/2004 | CA2397360A1 Stuffing box for progressing cavity pump drive |
| 02/05/2004 | US20040022660 Ring gear machine clearance |
| 02/05/2004 | DE19612497B4 Zahnradmaschine Gear machine |
| 02/05/2004 | DE10334003A1 Fuel- or oil gear pump used in vehicles, has gear wheels with plastic surfaces having same coefficient of thermal expansion as metal casing |
| 02/05/2004 | DE10233581A1 Vane pump, to discharge a fluid, has a vane rotating with the rotor to move along the inner contour of a curve ring to draw in the fluid through suction kidneys and compress it for delivery through pressure kidneys |
| 02/05/2004 | DE10233579A1 Impeller pump flow regulation valve has a control spring with lengths having different spring constants so that the pump characteristic curve is linear, even at high flow rates |
| 02/04/2004 | CN2602193Y Long teeth and short teeth expanded pumping rate multiple facing series geared pump using large tooth depth |
| 02/04/2004 | CN2602191Y Twin-cylinder acting rotor-piston pump |
| 02/04/2004 | CN1137332C Fluid pump with rotating-vane rotor |
| 02/03/2004 | US6685453 Fluid transfer machine with drive shaft lubrication and cooling |
| 02/03/2004 | US6685358 Hydraulic motor for use in high-pressure environment |
| 01/29/2004 | WO2004010002A1 Discharge porting design for screw compressor |
| 01/29/2004 | WO2004009992A1 Cam ring bearing for fuel delivery system |
| 01/29/2004 | WO2004009980A1 Improved fuel delivery system |
| 01/29/2004 | WO2003083311A3 Motor pump |
| 01/29/2004 | DE10243675B3 Exzenterschneckenpumpe mit Austauscheinheit Pump with exchange unit |
| 01/29/2004 | DE10233486A1 Flügelzellenpumpe Vane pump |
| 01/29/2004 | DE10160787A1 Flügelzellenpumpe Vane pump |
| 01/28/2004 | EP1384005A1 Variable displacement pump having a rotating cam ring |
| 01/28/2004 | EP1295036B1 Gear pump |
| 01/28/2004 | EP1135214B1 A gear pump and replaceable reservoir for a fluid sprayer |
| 01/28/2004 | CN1470781A Lubricatnig pump for interaxial differential mechanism |
| 01/28/2004 | CN1470767A 电动压缩机 Electric compressor |
| 01/27/2004 | US6682328 Multi-stage scroll fluid machine having a seal element between compression sections |
| 01/22/2004 | WO2004007968A1 Volume screw machine of rotary type |
| 01/22/2004 | WO2004007967A1 Volume screw machine of rotary type |
| 01/22/2004 | WO2004007966A1 Oil pump |
| 01/22/2004 | WO2004007965A1 Rotary screw machine end method of transforming a motion in such a machine |
| 01/22/2004 | WO2004007964A1 Rotary screw machine and method of transforming a motion in such a machine |
| 01/22/2004 | WO2004007963A1 Volume screw machine of rotary type |
| 01/22/2004 | WO2004007962A1 Volume screw machine of rotary type |
| 01/22/2004 | US20040013555 Discharge porting design for screw compressor |
| 01/22/2004 | US20040013541 Electric oil pump apparatus |
| 01/22/2004 | US20040011052 Fuel delivery system |
| 01/22/2004 | DE10325592A1 Rotationspumpe für Bremsvorrichtung Rotary pump for brake device |
| 01/22/2004 | DE10245497B3 Exzenterschneckenpumpe mit vergrößertem Temperaturbereich Pump with a larger temperature range |
| 01/22/2004 | DE10209672B3 Hydraulische Maschine Hydraulic machine |
| 01/22/2004 | CA2492349A1 Rotary screw machine of volume type and method of transforming a motion in a volume screw machine |
| 01/22/2004 | CA2492345A1 Method of transforming a motion in a volume screw machine of rotary type and rotary screw machine |
| 01/21/2004 | EP1382853A1 Rotary screw machine and method of transforming a motion in such a machine |
| 01/21/2004 | EP1382852A2 Internal gear oil pump |
| 01/21/2004 | CN2600616Y Acetate fiber spinning metering pump cavity plate with open corners |
| 01/21/2004 | CN1469063A Discharge high-pressure axle seal element |
| 01/20/2004 | US6679692 Oil pump |
| 01/20/2004 | US6679691 Anti cavitation system for two-speed motors |
| 01/20/2004 | US6679684 Pump device having a device for restricting movement of a movable member movable to pressurize working fluid |
| 01/15/2004 | WO2004005709A1 Rotary pump |
| 01/15/2004 | US20040009085 Toothing of a toothed wheel |
| 01/15/2004 | US20040007526 Water is pressurized and filtered via inverted osmosis, ultafiltration, and/or nanofiltration; |
| 01/15/2004 | DE10257220B3 Zahnradpumpe, insbesondere für einen Extruder Gear pump, in particular for an extruder |
| 01/15/2004 | DE10241247B3 Tragbare Pumpe Portable pump |
| 01/15/2004 | DE10229809A1 Flügelzellenpumpe Vane pump |
| 01/15/2004 | DE10227314A1 Pumpe Pump |
| 01/15/2004 | DE10227234A1 Fördereinrichtung zum Fördern insbesondere von gasförmigen oder flüssigen Medien Conveying means for conveying in particular gaseous or liquid media |