| Patents for F04B 9 - Piston machines or pumps characterised by the driving or driven means to or from their working members (9,236) |
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| 02/24/2004 | US6694858 Recirculating linear gas drive system |
| 02/24/2004 | CA2168152C Pilot control valve having means for recovering exhaust fluids |
| 02/19/2004 | US20040033149 Positive-displacement oil pump |
| 02/19/2004 | DE19912984B4 Hydraulische Betätigungseinrichtung für Schwingungstestgeräte Hydraulic actuator for vibration test equipment |
| 02/19/2004 | DE10236596A1 Flüssigkeitsdruckpumpe Fluid pressure pump |
| 02/18/2004 | EP1389653A1 Operation device for mechanisms associated to locks and for flow control of rivers |
| 02/12/2004 | WO2004012864A1 Liquid transfer apparatus and method of manufacturing the same |
| 02/12/2004 | US20040028540 Manually operated pump or compressor |
| 02/12/2004 | US20040025681 Support seat of an manual oil cylinder |
| 02/12/2004 | DE10233825A1 Piston pump for fuel in internal combustion engine has tappet drive component constructed as cam with first and second cam track which differ in height of their amplitudes with regard to cam axis and/or in number of amplitudes |
| 02/12/2004 | DE10233502A1 Vierkammermembranpumpe Four-chamber diaphragm pump |
| 02/11/2004 | EP1388500A2 Pump dispenser having an improved discharge valve |
| 02/11/2004 | CN2603231Y Brake pneuamtic pump for transportation vehicle |
| 02/11/2004 | CN2602612Y Material feeding pump for ice-cream machine |
| 02/11/2004 | CN1474749A Piezoelectric actuator and pump using same |
| 02/11/2004 | CN1474051A Fluid pump with gear transmission device |
| 02/11/2004 | CN1473743A Hand operated pump distributor |
| 02/11/2004 | CN1138067C Water pump |
| 02/08/2004 | CA2435840A1 Pump dispenser having an improved discharge valve |
| 02/05/2004 | WO2004011763A2 Mechanical bladder pump |
| 02/05/2004 | US20040024360 Suction pump |
| 02/05/2004 | US20040021398 Piezoelectric actuator and pump using same |
| 02/05/2004 | CA2494035A1 Mechanical bladder pump |
| 02/04/2004 | EP1386063A1 Lubricant pump unit |
| 02/04/2004 | EP1385779A1 Accurate dosing pump and accessories therefor |
| 02/03/2004 | US6685444 Fluid discharging device with a reciprocating pump member defining an outlet valve, and a valve member defining an outlet and suction valve |
| 02/03/2004 | US6684753 Reciprocating differential hydraulic machine, especially a differential hydraulic machine |
| 01/29/2004 | WO2004009998A1 Piston pump |
| 01/29/2004 | WO2004009160A1 An infusion pump system, an infusion pump unit and an infusion pump |
| 01/29/2004 | US20040018100 Pump |
| 01/29/2004 | US20040016231 Actuating device for a hydraulic lifting device |
| 01/28/2004 | EP1384901A1 Control method for building up pressure by means of pressure intensifiers, especially for testing the compression strength of tubes |
| 01/28/2004 | EP1384513A1 Droplets forming method and device for discharging constant-volume droplets |
| 01/27/2004 | US6681962 Liquid dispensing pump |
| 01/27/2004 | US6681961 Pump having a decompression device |
| 01/27/2004 | CA2149651C Integrity confirmation of evaporative emission control system against leakage |
| 01/27/2004 | CA2147988C Reciprocating engine |
| 01/22/2004 | US20040013540 Oil pressure operated pump for marine steering gears |
| 01/22/2004 | US20040013539 Pump |
| 01/22/2004 | US20040013538 Single-die injection pump for a common rail fuel injection system |
| 01/22/2004 | US20040011193 Arrangement at a piston engine and method of controlling the pistons |
| 01/21/2004 | EP1382845A2 Oil pump for marine steering gear |
| 01/21/2004 | CN2600611Y Duplex deep well manual pump |
| 01/21/2004 | CN1469980A Autogenous lubricating device |
| 01/21/2004 | CN1135199C Beverage container |
| 01/15/2004 | US20040008853 Electroactive polymer devices for moving fluid |
| 01/15/2004 | DE19631287B4 Kraftstoffpumpvorrichtung für Zweitaktmotoren mit einer zusätzlichen Antriebseinheit Fuel pumping apparatus for two-stroke engines with an additional drive unit |
| 01/14/2004 | EP1379784A1 Single-plunger injection pump for a common rail fuel injection system |
| 01/14/2004 | EP1117931B1 Manually operated pump or compressor |
| 01/14/2004 | CN2599275Y Hand-operated high-pressure water pump |
| 01/14/2004 | CN2599274Y Pump box for coal-mining machine |
| 01/14/2004 | CN1467376A Pump |
| 01/14/2004 | CN1467375A 泵 Pump |
| 01/14/2004 | CN1134285C Fluid driven pumps and apparatus employing such pumps |
| 01/13/2004 | US6676386 Oilless air motor assembly for hydraulic pumps |
| 01/08/2004 | WO2004003383A1 Hydraulic amplification device for a high-pressure pumping system |
| 01/08/2004 | WO2004002897A1 A pressurisation system |
| 01/08/2004 | US20040005230 Hydraulic air compressor having an automatic water valve reulation mechanism |
| 01/08/2004 | US20040003493 Reservoir connector |
| 01/08/2004 | DE10242271B3 Kolbenexpansionsmaschine Piston expander |
| 01/08/2004 | DE10224924A1 Verfahren und Vorrichtung zum Erzeugen von nutzbarer Wärme oder Kälte mittels eines Wärme- bzw. Kälteprozesses Method and apparatus for generating usable heat or cold by means of a heating or cooling process |
| 01/07/2004 | EP1084334B8 Method of operation and motor with additional compressed air injection |
| 01/07/2004 | CN2597703Y Double cylinder water pump device |
| 01/07/2004 | CN2597702Y Pedal self-pressurizing liquid nitrogen pump |
| 01/06/2004 | US6672483 Dispenser for chemically unstable products |
| 01/06/2004 | US6672263 Reciprocating and rotary internal combustion engine, compressor and pump |
| 01/06/2004 | CA2236957C Air driven diaphragm pump |
| 01/02/2004 | EP1375916A1 Micro pump |
| 01/01/2004 | US20040001765 Pumping arrangement |
| 01/01/2004 | US20040000567 Dispenser for the discharge of flowable media |
| 12/31/2003 | WO2004001227A1 Hydrostatic pump |
| 12/31/2003 | CN2596064Y Single axis two direction plunger pump |
| 12/31/2003 | CN1464944A Pumping arrangement |
| 12/30/2003 | US6668613 Hydraulic compression tool and hydraulic compression tool motor |
| 12/24/2003 | WO2003107515A1 Linear actuator, and pump and compressor devices using the actuator |
| 12/24/2003 | DE10235398C1 Kraftstoff-Handpumpe Manual fuel pump |
| 12/24/2003 | CN1463486A Linear compressor drive device |
| 12/24/2003 | CN1132194C Appts. for inspection and maintenance of pipe-line in water |
| 12/18/2003 | WO2003104652A1 A pumping system with replaceable piston-cylinder unit |
| 12/18/2003 | US20030230084 Actuating device for a hydraulic lifting device |
| 12/17/2003 | CN1462331A Lubricant oil pump unit |
| 12/16/2003 | US6663360 Fluid injection pump with internal air actuator valve |
| 12/16/2003 | US6663354 Hydrostatic axial piston machine with a control port, a cradle supported swashplate and a swashplate actuating piston |
| 12/11/2003 | WO2003102395A2 Power pistons |
| 12/11/2003 | US20030228230 Fuel injection pump |
| 12/11/2003 | US20030228227 Pumping system, a replacement kit for the pumping system, and a method for maintaining the pumping system |
| 12/10/2003 | EP1369587A2 Pump valve |
| 12/10/2003 | EP1369585A2 Pump |
| 12/10/2003 | CN2591267Y Sectional eccentric shaft type plunger piston pump crankshaft |
| 12/10/2003 | CN2591266Y Wind force water pump |
| 12/09/2003 | US6659311 Swivel pump dispenser for dispensing liquid from a selected one of plurality of liquid compartments |
| 12/04/2003 | US20030222154 High pressure fuel supply apparatus |
| 12/03/2003 | EP1185794B1 Piston pump |
| 12/03/2003 | CN2589689Y Minisized piston type compressor |
| 12/03/2003 | CN1460154A Single-plunger injection pump for pressure accumulating tube-fuel injection system |
| 12/03/2003 | CN1129711C Manually operated pump or compressor |
| 12/02/2003 | US6655933 CAM operated fuel pump with split function follower springs |
| 12/02/2003 | US6655923 Micromechanic pump |
| 12/02/2003 | US6655556 Dispensing device intended to equip a container |
| 12/02/2003 | CA2061903C Compression spring fluid motor |