| Patents for F04B 1 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (10,723) |
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| 03/09/2004 | US6701825 Return to neutral device for a hydraulic apparatus |
| 03/04/2004 | US20040042910 Long-piston hydraulic machines |
| 03/04/2004 | US20040042906 Long-piston hydraulic machines |
| 03/04/2004 | US20040040435 Hydraulic radial piston engine |
| 03/02/2004 | US6698399 Radial piston pump for high-pressure fuel supply |
| 03/02/2004 | US6698199 Swash plate type hydraulic drive transmission and hydrostatic type continuously variable transmission |
| 03/02/2004 | US6698196 Drive circuit for fluid motor |
| 02/26/2004 | US20040037710 Fluid machine |
| 02/26/2004 | US20040035396 High pressure fuel pump for a fuel system on a direct injection internal combustion engine, fuel system and internal combustion engine |
| 02/26/2004 | DE10237557A1 Swashplate pump especially for high pressure cleaning appliances has swashplate drive with pinion meshing with gear ring installed on swashplate concentrically to rotational axis, and revolving around axis parallel to swashplate |
| 02/26/2004 | DE10236853A1 Radial piston pump for a slippage-controlled brake installation in motor vehicles has a retaining body with working pistons protruding into a crank chamber and a drive shaft to drive the pistons |
| 02/26/2004 | DE10235813A1 Method for applying divisions to slide plane of guide block blank involves pre-preparing base surface and supplying material which is then locally fused through contact-free local heat input |
| 02/24/2004 | US6694950 Hybrid control method for fuel pump using intermittent recirculation at low and high engine speeds |
| 02/24/2004 | US6694729 Pump |
| 02/19/2004 | WO2004015286A1 Guide block and method for embodying divisions on a slide plane of a guide block |
| 02/19/2004 | US20040033145 Pump housing mounting flange with tangentially positioned mounting slots |
| 02/19/2004 | US20040033144 Decoupling mechanism for hydraulic pump/motor assembly |
| 02/18/2004 | EP1389683A2 Fuel injection system for internal combustion engine |
| 02/18/2004 | CN1138916C Improvement of high-pressure pump for supplying oil to IC engine |
| 02/12/2004 | US20040025684 Guided shoe for radial piston pump |
| 02/12/2004 | DE10235660A1 Coupling or transmission unit has driving power from drive shaft variably distributed to driven shaft and third shaft, and power distribution is established by current operating state of hydraulic unit connected to third shaft |
| 02/12/2004 | DE10220889B3 Verstellvorrichtung für hydrostatische Kolbenmaschinen Adjusting for hydrostatic piston engines |
| 02/11/2004 | EP1387958A1 A pumping system |
| 02/11/2004 | EP1194701B1 Needle bearing and pump unit comprising a needle bearing |
| 02/11/2004 | CN1138067C Water pump |
| 02/11/2004 | CN1138066C Low-noise hydraulic plunger pump with flow distributor having check valve |
| 02/11/2004 | CN1138065C Low noise hydraulic plunger pump with energy accumulator |
| 02/10/2004 | US6688858 Pump housing mounting flange with tangentially positioned mounting slots |
| 02/05/2004 | US20040022654 Piston type small discharge pump |
| 02/05/2004 | US20040022645 Circumferential piston compressor/pump/engine (CPC/CPP/CPE); circumferential piston machines |
| 02/05/2004 | US20040020463 Pump and hydraulic system with low pressure priming and over pressurization avoidance features |
| 02/05/2004 | DE10244374A1 Hydraulic discharge system to deliver hydraulic pressure, to a vehicle brake or reservoir, has a multi-part cage to apply tension to the return spring at the piston |
| 02/05/2004 | DE10232983A1 Kolbenmaschine mit Pulsation Piston engine with pulsation |
| 02/05/2004 | DE10206729B4 Hohlkolben mit Hohlkugelfüllung Hollow piston with hollow ball filling |
| 02/05/2004 | DE10151057B4 Kraftstoffhochdruckpumpe für eine Brennkraftmaschine mit eingesetzter Ventilplatte High-pressure fuel pump for an internal combustion engine with inserted valve plate |
| 02/03/2004 | US6684636 Electro-hydraulic pump control system |
| 02/03/2004 | US6684634 Swash plate angle control mechanism of hydraulic continuously variable transmission |
| 01/29/2004 | WO2004009998A1 Piston pump |
| 01/29/2004 | WO2004009996A1 Piston engine comprising a pulsation-reducing device |
| 01/29/2004 | US20040016420 Fuel pump, in particular for an internal combustion engine with direct injection |
| 01/29/2004 | US20040016230 Noise attenuation in a hydraulic circuit |
| 01/29/2004 | DE10232513A1 Pulsationsoptimierte hydrostatische Verdrängermaschine Pulsationsoptimierte hydrostatic displacement |
| 01/29/2004 | DE10230542A1 Oberfläche eines Körpers, auf dem ein anderer Körper in einer bevorzugten Gleitrichtung gegeneinander gleitend anordenbar ist Surface of a body, on the other body in a preferred direction of sliding against each other is slidably locatable |
| 01/28/2004 | CN1136388C Hydraulic pump |
| 01/27/2004 | US6682915 Fermentation of enterbacter |
| 01/27/2004 | US6682814 Fiber-polymeric composite siding unit and method of manufacture |
| 01/27/2004 | US6682325 Hydraulic unit |
| 01/27/2004 | US6682315 Axial piston pump barrel with a cast high pressure collection cavity |
| 01/27/2004 | US6682312 Tandem pump and interface for same |
| 01/27/2004 | CA2327023C Endplate for use with outboard bearing designs |
| 01/22/2004 | US20040013549 Anti-lock brake system pump housing |
| 01/22/2004 | US20040013540 Oil pressure operated pump for marine steering gears |
| 01/22/2004 | US20040011195 Operation mechanism of a variable displacement hydraulic pump |
| 01/22/2004 | US20040011193 Arrangement at a piston engine and method of controlling the pistons |
| 01/22/2004 | US20040011031 Opposing pump/motors |
| 01/22/2004 | DE4424671B4 Steuerspiegel einer hydraulischen Maschine A control plate of a hydraulic machine |
| 01/22/2004 | DE10231489A1 Linear osszilierende Rohrpumpe Linear osszilierende tube pump |
| 01/22/2004 | DE10229791A1 Hydraulikaggregat Hydraulic unit |
| 01/22/2004 | DE10229396A1 Radialkolbenpumpe zur Kraftstoffhochdruckversorgung bei Einspritzsystemen von Brennkraftmaschinen mit verbessertem Wirkungsgrad Radial piston pump for high pressure fuel supply in fuel injection systems of internal combustion engines with improved efficiency |
| 01/22/2004 | DE10228552A1 Radial piston pump esp. for common-rail fuel injection systems for IC engines has drive shaft with end section on floating mounting for fuel feed pump in front of piston pump |
| 01/22/2004 | DE10228551A1 Radialkolbenpumpe Radial piston pump |
| 01/21/2004 | EP1382846A2 Pump particularly for hydraulic rudder control systems |
| 01/21/2004 | EP1382845A2 Oil pump for marine steering gear |
| 01/21/2004 | EP1381770A1 High-pressure fuel pump for a fuel system of a direct injection internal combustion engine, fuel system and internal combustion engine |
| 01/21/2004 | CN1469980A Autogenous lubricating device |
| 01/20/2004 | US6679684 Pump device having a device for restricting movement of a movable member movable to pressurize working fluid |
| 01/15/2004 | WO2004005754A2 Hydraulic torque vectoring differential |
| 01/15/2004 | WO2004005701A1 Guided shoe for radial piston pump |
| 01/15/2004 | WO2004005094A1 Hydraulic unit |
| 01/15/2004 | US20040007126 Wobble plate piston mechanism |
| 01/14/2004 | CN1467394A Method of making closed cavity pistons |
| 01/13/2004 | US6676294 Rocking bearing |
| 01/13/2004 | US6675776 Electro-hydraulic actuator for a hydraulic pump |
| 01/08/2004 | WO2004003385A1 Radial piston pump |
| 01/08/2004 | WO2004003382A1 Radial piston pump unit |
| 01/08/2004 | US20040003713 Fuel pump for inter-cylinder direct fuel injection apparatus |
| 01/08/2004 | US20040003711 Piston assembly for a radial piston hydraulic motor |
| 01/08/2004 | DE20213168U1 Pump, especially for fuel injection system of an internal combustion engine, comprises a support element which has a shoulder on its side facing the valve spring |
| 01/08/2004 | DE10325551A1 Verfahren zur Herstellung geschlossener Hohlkolben A process for producing a closed hollow piston |
| 01/08/2004 | DE10226492A1 Axialkolbenmaschine mit verstellbarem Kolbenhub Axial piston machine with adjustable stroke |
| 01/07/2004 | EP1378664A2 Fuel pump for direct fuel injection apparatus |
| 01/07/2004 | EP1378662A1 Hydraulic axial piston pump |
| 01/07/2004 | EP1378628A1 Hollow piston for a piston machine and method for producing a hollow piston |
| 01/07/2004 | EP1377757A1 Clutch assembly with a gear pump |
| 01/07/2004 | EP0983438B1 Radial piston pump for high pressure fuel supply |
| 01/06/2004 | US6672848 Cruciform pump |
| 01/06/2004 | US6672843 Dual pump apparatus comprising dual drive shafts and auxiliary pump |
| 01/06/2004 | US6672686 Pumping apparatus for a vehicle brake system |
| 01/06/2004 | US6672684 Vehicle brake system with a motor/pump unit |
| 01/06/2004 | US6672285 Suction controlled pump for HEUI systems |
| 01/02/2004 | EP1375915A1 Radial piston pump with improved efficiency for high pressure fuel supply in injection systems of internal combustion engines |
| 01/02/2004 | EP1375821A1 Hydrostatic pump assembly having symmetrical endcap |
| 01/02/2004 | EP1373725A1 Saddle bearing liner for axial piston pump |
| 01/01/2004 | US20040001763 Releasable locking mechanism for axial piston hydraulic pump |
| 12/31/2003 | CN1133003C High pressure pump with switch valve for supplying fuel to internal combustion engine |
| 12/30/2003 | US6669453 Pump assembly useful in internal combustion engines |
| 12/30/2003 | US6669166 Electromagnetic valve |
| 12/30/2003 | US6668801 Suction controlled pump for HEUI systems |
| 12/28/2003 | CA2433719A1 Hydrostatic pump assembly having symmetrical endcap |
| 12/24/2003 | WO2003106816A1 Decoupling mechanism for hydraulic pump/motor assembly |