| 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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| 05/11/2000 | WO2000025844A1 Compact pump drive system |
| 05/11/2000 | CA2832936A1 Reservoir connector |
| 05/11/2000 | CA2669175A1 Reservoir connector |
| 05/10/2000 | CN2377375Y Outlet supercharging device for single cylinder piston hand lift pump |
| 05/10/2000 | CN2377374Y High-pressure air pump |
| 05/10/2000 | CN2377373Y Power output device of counter-swashplate piston mud pump |
| 05/09/2000 | US6059754 Pulsed lavage pump with integral power source and variable flow control |
| 05/04/2000 | WO2000024652A1 Double spring precompression pump with priming feature |
| 05/04/2000 | DE19850495A1 Hand-held device for squeezing substance from flexible bag or cartridge has camping lever which cooperates with eccentric disc of drive mechanism |
| 05/04/2000 | DE19849669A1 Motor-Pumpe-Einrichtung Motor-pump device |
| 05/04/2000 | CA2349543A1 Double spring precompression pump with priming feature |
| 05/03/2000 | CN2376550Y Multi-function hand-pressing pump |
| 05/03/2000 | CN2376549Y Improvement for air compressor structure |
| 05/02/2000 | US6056521 Two-cylinder air compressor |
| 04/27/2000 | WO2000023716A1 Fluid-actuated working device |
| 04/27/2000 | WO2000023710A1 Piston pump for supplying fuel at high pressure |
| 04/27/2000 | WO2000023199A1 Low capacity pump with enhanced compatibility |
| 04/27/2000 | CA2347140A1 Low capacity pump with enhanced compatibility |
| 04/26/2000 | EP0995498A2 Pump dispenser and method of making it |
| 04/25/2000 | US6053709 Pump for moving viscous fluid materials |
| 04/25/2000 | US6053361 Out-of-fluid detector for reciprocating pumps |
| 04/20/2000 | DE19848040A1 Radial piston pump for high fuel pressure in IC engines with common-rail injection systems has two plates engaging fully on each other, and second back pressure valve between first plate and pump housing |
| 04/20/2000 | DE19847776A1 Device for feeding lubricating oil to lubrication points of machine, conveyor or escalator has at least two rotary-lift-piston pumps in series in housing and drive unit |
| 04/20/2000 | DE19825162A1 Pneumatic/hydraulic piston water pump for plankton culture in sea water aquarium, etc. has cylinder with disc piston and valve, to generate air-water mixture with microscopic air bubbles to prevent destruction of plankton |
| 04/19/2000 | CN2374668Y Hydraulic engine oil pump |
| 04/13/2000 | WO2000020757A1 Manually operated pump or compressor |
| 04/12/2000 | EP0991877A1 Device, specially a pump |
| 04/12/2000 | EP0991863A1 Radial piston pump |
| 04/11/2000 | US6047629 Hydraulic pump |
| 04/06/2000 | WO2000018513A1 Dispenser pumps |
| 04/05/2000 | EP0990796A2 Assembly of a mechanical or hydraulic drive and a piston pump |
| 04/05/2000 | EP0869876A4 Tire pressurizing and regulating apparatus |
| 04/05/2000 | CN2372478Y Handlance |
| 04/04/2000 | US6045008 Fluid pump dispenser |
| 03/30/2000 | WO2000017459A1 Oscillating dual bladder balanced pressure proportioning pump system |
| 03/23/2000 | DE19948128A1 A device for the conversion of heat into hydrodynamic energy for ship propulsion reduces pollution |
| 03/16/2000 | WO2000013951A1 Motor-pump assembly |
| 03/15/2000 | EP0985825A2 Plunger pump for lubricants |
| 03/15/2000 | EP0985094A1 Adjustable stop for variable displacement pumps |
| 03/15/2000 | EP0984803A2 Volumetric pump with sterility seal |
| 03/15/2000 | CN2369000Y Well top pump |
| 03/14/2000 | US6035670 Clothes washer having a compressed water generation apparatus |
| 03/09/2000 | WO2000012897A1 Barrier fluid seal, reciprocating pump and operating method |
| 03/09/2000 | DE19840365A1 Membrankolbenpumpe Diaphragm piston pump |
| 03/09/2000 | DE19840048A1 Motor-Pumpen-Aggregat Motor-pump assembly |
| 03/08/2000 | EP0984164A2 Diaphragm pump |
| 03/08/2000 | EP0984161A1 Combination of shim and cam |
| 03/08/2000 | CN2367790Y Manual fire-fighting water pump |
| 03/08/2000 | CN2367789Y Manual pump |
| 03/08/2000 | CN2367788Y Hand-driven high-pressure liquid pump |
| 03/08/2000 | CN1246812A Dispensing apparatus |
| 03/07/2000 | US6032834 Pump dispenser and method of making it |
| 03/02/2000 | DE19839430A1 Radial piston pump includes combined roller bearing and eccentric bush, improving on earlier designs in terms of axial length and simplicity |
| 03/01/2000 | CN2366376Y Liquid-discharging means of bottle |
| 03/01/2000 | CN1246074A Fluid driven pumps and apparatus employing such pumps |
| 02/23/2000 | EP0912830A4 Double acting pneumatically driven rolling diaphragm pump |
| 02/23/2000 | EP0854685B1 Rear entry stepped pump |
| 02/23/2000 | CN2365422Y Plunger pump |
| 02/15/2000 | US6024542 Piston pump and method of reducing vapor lock |
| 02/10/2000 | WO2000006890A1 Engine fuel pump |
| 02/10/2000 | DE19834599A1 Device for feeding lubricating oil to lubrication points of machine, conveyor or escalator has at least two rotary-lift-piston pumps in series in housing and drive unit |
| 02/09/2000 | CN2363078Y Container with oil pumping device |
| 02/02/2000 | EP0976968A2 Piston pumps for the transport of lubricant to different points in a machine, a conveyor or an escalator |
| 02/02/2000 | CN2361872Y Hand plunger pump |
| 02/01/2000 | US6019256 Condiment pump |
| 01/27/2000 | WO2000004289A2 Diaphragm pump including improved drive mechanism and pump head |
| 01/26/2000 | EP0974402A1 Pump with a ball check valve |
| 01/26/2000 | EP0974401A1 Pump with venting means |
| 01/25/2000 | US6017200 Integrated pumping and/or energy recovery system |
| 01/25/2000 | US6016790 High-pressure pump for use in fuel injection system for diesel engine |
| 01/20/2000 | WO2000003141A1 Small pump device and sphygmomanometer using the pump device |
| 01/19/2000 | EP0972936A2 Positive displacement pumps |
| 01/19/2000 | CN2359486Y Self-suction wind-power water pump |
| 01/18/2000 | US6015268 Precision metered multiple fluid pumping system |
| 01/13/2000 | WO2000001948A2 Radial piston pump |
| 01/13/2000 | DE19830890A1 Three-ring needle bearing for pump part of working machine, pref. ABS piston pump, driven by electric motor is made of simply manufactured parts easily assembled to form unit |
| 01/13/2000 | DE19829548A1 Radialkolbenpumpe Radial piston pump |
| 01/13/2000 | DE19829546A1 Radialkolbenpumpe Radial piston pump |
| 01/12/2000 | CN2358246Y Micro-hand oil-well pump |
| 01/05/2000 | EP0969208A1 Diaphragm pump |
| 01/05/2000 | DE19829536A1 Hand-operated piston pump |
| 12/29/1999 | WO1999067533A1 Eccentric system |
| 12/29/1999 | EP0966607A1 Hydraulic pressure supply pump with multiple sequential plungers |
| 12/29/1999 | EP0966597A1 Hydraulic pump with engine mounted drive bearing |
| 12/29/1999 | CA2276848A1 Diaphragm pump |
| 12/28/1999 | US6007310 Volumetric pump with sterility seal |
| 12/23/1999 | DE19923364A1 Pump system for manually operated knapsack sprayers |
| 12/23/1999 | DE19827653A1 Eccentric fitting for radial piston pump |
| 12/22/1999 | EP0965000A1 Hydraulic unit |
| 12/22/1999 | CN1239189A Diaphram pump |
| 12/21/1999 | US6003430 Radial piston pump |
| 12/16/1999 | WO1999064742A1 Fluid well pump |
| 12/16/1999 | DE19826084A1 Pressure conversion machine with a hydraulic motor and hydraulic pump |
| 12/15/1999 | EP0963729A2 Pump with cover carrying seal plug |
| 12/09/1999 | WO1999063206A1 Operating method and device for supplementary compressed air injection engine operating with mono-energy or bi-energy in two or three powering modes |
| 12/09/1999 | CA2334089A1 Operating method and device for supplementary compressed air injection engine operating with mono-energy or bi-energy in two or three powering modes |
| 12/08/1999 | EP0681652B1 Double acting simplex plunger pump |
| 12/07/1999 | US5997181 Hydraulic oil well pump drive system |
| 12/07/1999 | US5996417 Preload piston actuator |
| 12/02/1999 | WO1999051882A9 Diaphragm pump and pump for double-breast pumping |