| 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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| 11/24/1994 | WO1994027039A1 Variable displacement high pressure pump for common rail fuel injection systems |
| 11/24/1994 | CA2162862A1 Leak detection assembly |
| 11/22/1994 | US5366642 Compact water filtration and purification pump |
| 11/22/1994 | US5366353 Air valve with bleed feature to inhibit icing |
| 11/17/1994 | EP0624729A1 Air operated double diaphragm pump |
| 11/17/1994 | EP0624379A1 Double acting piston pump for medical use |
| 11/16/1994 | CN2182890Y 压力泵 Pressure pump |
| 11/15/1994 | US5364242 Pump apparatus and method including double activation pump apparatus |
| 11/15/1994 | US5364234 High pressure devices |
| 11/10/1994 | WO1994025757A1 Reciprocating pump |
| 11/10/1994 | WO1994025755A1 Hydraulic fluid-driven, multicylinder, modular, reciprocating piston pump |
| 11/10/1994 | DE4315186A1 Pump arrangement |
| 11/09/1994 | CN2182282Y Liquid extractor |
| 11/08/1994 | US5362213 Micro-pump and method for production thereof |
| 11/08/1994 | US5362158 Bearing unit and electric pump using the same |
| 11/03/1994 | DE4313853A1 Hand-operatable pump for feed pumps of fuel injection systems for internal combustion engines |
| 11/01/1994 | US5360322 Hydraulic pump driven by an electric motor |
| 11/01/1994 | US5359908 System for reversibly transforming rotary motion into self-guided rectilinear motion |
| 10/26/1994 | EP0620747A1 Self-contained drip apparatus |
| 10/26/1994 | CN2180800Y Two-cylinder hand-press water pump |
| 10/26/1994 | CN2180799Y Piston type men power and power two-purpose water pump |
| 10/26/1994 | CN1094120A Pump with reciprocating air motor |
| 10/25/1994 | US5357991 Gas phase semiconductor processor with liquid phase mixing |
| 10/25/1994 | US5357827 Torque compensated cam assembly and method |
| 10/13/1994 | WO1994023202A1 Reciprocating piston driving system |
| 10/13/1994 | WO1994022409A1 Bidirectional piston pump and its use |
| 10/13/1994 | WO1994012285A3 Dispensing device |
| 10/12/1994 | CN2179472Y Pump piston type deep well pump |
| 10/06/1994 | DE4310267A1 Device for cleaning articles |
| 10/05/1994 | CN1026147C Single-cylinder, double-acting hydraulic mud pump |
| 10/04/1994 | US5351862 Dispensing pump for media of low viscosity, especially paste-like media |
| 09/29/1994 | WO1994021915A1 Pressure medium driven device performing linear motion |
| 09/29/1994 | DE4310062A1 Radial piston machine |
| 09/28/1994 | CN2178285Y Reciprocating helical double plunger pump |
| 09/27/1994 | US5349895 Air motor control |
| 09/21/1994 | EP0616133A1 Pumping machine and generator system utilizing the same |
| 09/20/1994 | US5348382 For imparting an eccentric motion to the periphery |
| 09/16/1994 | CA2118772A1 Pumping machine and generator system utilizing the same |
| 09/15/1994 | WO1994020755A1 Portable, battery operated air pump |
| 09/15/1994 | WO1994020190A1 Apparatus and method for supercritical fluid extraction |
| 09/15/1994 | WO1994020189A1 Apparatus and method for supercritical fluid extraction |
| 09/15/1994 | WO1994020188A1 Apparatus and method for supercritical fluid extraction |
| 09/14/1994 | CN2177102Y Hand driven pressure pump |
| 09/13/1994 | US5346372 Fluid flow regulating device |
| 09/13/1994 | US5346369 Bilge pump actuated by wave motion |
| 09/13/1994 | CA2032483C Peristaltic pump |
| 09/08/1994 | DE4323733C1 Delivery pump |
| 09/07/1994 | EP0587879A4 Pressure booster |
| 09/07/1994 | CN2176449Y Vaccum cam compression pump |
| 09/06/1994 | US5344290 Method and device for controlling a double-cylinder thick matter pump |
| 08/24/1994 | EP0611428A1 Piston-articulating pin-connecting rod assembly for reciprocating hermetic compressors |
| 08/23/1994 | US5340288 Electromagnetic pump |
| 08/23/1994 | US5340283 Water pumping apparatus utilizing produced compressed air |
| 08/23/1994 | CA1331591C Metering and spray pump for liquid and low-viscosity substances |
| 08/20/1994 | CA2105359A1 Electrically driven pump for liquids |
| 08/18/1994 | WO1994018501A1 Process for conveying thick matter containing preshredded scrap metal or similar solids |
| 08/18/1994 | CA2154875A1 Process for conveying thick matter containing preshredded scrap metal or similar solids |
| 08/17/1994 | EP0429591B1 Improved micro-pump |
| 08/17/1994 | EP0302079B1 Fluid pressure intensifier |
| 08/09/1994 | US5336061 Solar powered relatively balanced pumping system |
| 08/04/1994 | DE4341607A1 Transport system for shredded scrap-metal in viscous material |
| 08/03/1994 | EP0609044A1 An air valving mechanism, in combination with a double diaphragm pump subassembly |
| 08/03/1994 | CN1090379A Reciprocating engine |
| 08/03/1994 | CN1090208A Dispensing device |
| 08/02/1994 | US5334003 Air valving mechanism, in combination with a double diaphragm pump subassembly |
| 07/27/1994 | CN2172814Y Double-suction pedal liquid pump |
| 07/26/1994 | CA2113754A1 Air valving mechanism, in combination with a double diaphragm pump subassembly |
| 07/20/1994 | EP0606980A2 Liquid chromatography system |
| 07/20/1994 | CN2172355Y Pump in liquid |
| 07/20/1994 | CN2172354Y Pedal water extracting machine |
| 07/20/1994 | CN2172129Y 医用气泵 Medical pump |
| 07/13/1994 | EP0373202B1 Piston pump for multiphase fluids and applications thereof |
| 07/13/1994 | CN1025448C Sleeve type inflator |
| 07/12/1994 | US5328339 Pump driven by air pressure |
| 07/07/1994 | WO1994015090A1 Integrity confirmation of evaporative emission control system against leakage |
| 07/06/1994 | CN2171015Y Hand operated towerless water supply small equipment |
| 06/29/1994 | CN2170386Y Double bottom valve water sucking machine operated by hand |
| 06/29/1994 | CN1088664A Concrete pump with conveying cylinder, especially double-cylinders concrete pump |
| 06/28/1994 | US5324175 Pneumatically operated reciprocating piston compressor |
| 06/28/1994 | US5324173 High pressure intensifier |
| 06/23/1994 | WO1994013954A1 Compact water filtration and purification pump |
| 06/23/1994 | WO1994013518A1 Noise-reduced pumping set, in particular for regulated brake systems |
| 06/22/1994 | EP0602389A1 Liquid spraying or foam delivering apparatus |
| 06/22/1994 | CN2169703Y Oil pumping device |
| 06/21/1994 | US5322422 Volumetric pump tube reshaper and method |
| 06/21/1994 | US5322418 High pressure liquid pump apparatus and pumping method |
| 06/16/1994 | DE4401680A1 Liq. pressure-driven rainwater pump unit with electronic control - has coupled pumping systems fed from drinking-water supply via inlet and outlet magnetic valves operated by resettable register |
| 06/16/1994 | DE4241825A1 Radial piston pump for controlled brake systems - has elastomeric damping layer between drive shaft and piston |
| 06/15/1994 | CN2168965Y Automatic pump for bicycle and motorcycle |
| 06/14/1994 | US5320498 Structure for plunger pump |
| 06/14/1994 | US5320252 Liquid dispensing apparatus for dispensing a liquid under pressure from a container by means of pressurized fluid |
| 06/09/1994 | WO1994012791A1 Disposable plastic liquid pump |
| 06/09/1994 | WO1994012285A2 Dispensing device |
| 06/08/1994 | CN2168089Y Pedal water-pumping device |
| 06/08/1994 | CN2168088Y High-efficient pump without idle stroke |
| 06/08/1994 | CN2168087Y Pedal-pump bathing douche |
| 06/07/1994 | US5318317 Bicycle operated air pump |
| 06/01/1994 | EP0599196A1 A water pumping apparatus |
| 05/31/1994 | US5316453 Slurry pump with discharge cylinders, especially two-cylinder concrete pump |
| 05/31/1994 | US5316451 Valve porting for rotating barrel ram pump |