Patents
Patents for F04B 9 - Piston machines or pumps characterised by the driving or driven means to or from their working members (9,236)
11/1994
11/24/1994WO1994027039A1 Variable displacement high pressure pump for common rail fuel injection systems
11/24/1994CA2162862A1 Leak detection assembly
11/22/1994US5366642 Compact water filtration and purification pump
11/22/1994US5366353 Air valve with bleed feature to inhibit icing
11/17/1994EP0624729A1 Air operated double diaphragm pump
11/17/1994EP0624379A1 Double acting piston pump for medical use
11/16/1994CN2182890Y 压力泵 Pressure pump
11/15/1994US5364242 Pump apparatus and method including double activation pump apparatus
11/15/1994US5364234 High pressure devices
11/10/1994WO1994025757A1 Reciprocating pump
11/10/1994WO1994025755A1 Hydraulic fluid-driven, multicylinder, modular, reciprocating piston pump
11/10/1994DE4315186A1 Pump arrangement
11/09/1994CN2182282Y Liquid extractor
11/08/1994US5362213 Micro-pump and method for production thereof
11/08/1994US5362158 Bearing unit and electric pump using the same
11/03/1994DE4313853A1 Hand-operatable pump for feed pumps of fuel injection systems for internal combustion engines
11/01/1994US5360322 Hydraulic pump driven by an electric motor
11/01/1994US5359908 System for reversibly transforming rotary motion into self-guided rectilinear motion
10/1994
10/26/1994EP0620747A1 Self-contained drip apparatus
10/26/1994CN2180800Y Two-cylinder hand-press water pump
10/26/1994CN2180799Y Piston type men power and power two-purpose water pump
10/26/1994CN1094120A Pump with reciprocating air motor
10/25/1994US5357991 Gas phase semiconductor processor with liquid phase mixing
10/25/1994US5357827 Torque compensated cam assembly and method
10/13/1994WO1994023202A1 Reciprocating piston driving system
10/13/1994WO1994022409A1 Bidirectional piston pump and its use
10/13/1994WO1994012285A3 Dispensing device
10/12/1994CN2179472Y Pump piston type deep well pump
10/06/1994DE4310267A1 Device for cleaning articles
10/05/1994CN1026147C Single-cylinder, double-acting hydraulic mud pump
10/04/1994US5351862 Dispensing pump for media of low viscosity, especially paste-like media
09/1994
09/29/1994WO1994021915A1 Pressure medium driven device performing linear motion
09/29/1994DE4310062A1 Radial piston machine
09/28/1994CN2178285Y Reciprocating helical double plunger pump
09/27/1994US5349895 Air motor control
09/21/1994EP0616133A1 Pumping machine and generator system utilizing the same
09/20/1994US5348382 For imparting an eccentric motion to the periphery
09/16/1994CA2118772A1 Pumping machine and generator system utilizing the same
09/15/1994WO1994020755A1 Portable, battery operated air pump
09/15/1994WO1994020190A1 Apparatus and method for supercritical fluid extraction
09/15/1994WO1994020189A1 Apparatus and method for supercritical fluid extraction
09/15/1994WO1994020188A1 Apparatus and method for supercritical fluid extraction
09/14/1994CN2177102Y Hand driven pressure pump
09/13/1994US5346372 Fluid flow regulating device
09/13/1994US5346369 Bilge pump actuated by wave motion
09/13/1994CA2032483C Peristaltic pump
09/08/1994DE4323733C1 Delivery pump
09/07/1994EP0587879A4 Pressure booster
09/07/1994CN2176449Y Vaccum cam compression pump
09/06/1994US5344290 Method and device for controlling a double-cylinder thick matter pump
08/1994
08/24/1994EP0611428A1 Piston-articulating pin-connecting rod assembly for reciprocating hermetic compressors
08/23/1994US5340288 Electromagnetic pump
08/23/1994US5340283 Water pumping apparatus utilizing produced compressed air
08/23/1994CA1331591C Metering and spray pump for liquid and low-viscosity substances
08/20/1994CA2105359A1 Electrically driven pump for liquids
08/18/1994WO1994018501A1 Process for conveying thick matter containing preshredded scrap metal or similar solids
08/18/1994CA2154875A1 Process for conveying thick matter containing preshredded scrap metal or similar solids
08/17/1994EP0429591B1 Improved micro-pump
08/17/1994EP0302079B1 Fluid pressure intensifier
08/09/1994US5336061 Solar powered relatively balanced pumping system
08/04/1994DE4341607A1 Transport system for shredded scrap-metal in viscous material
08/03/1994EP0609044A1 An air valving mechanism, in combination with a double diaphragm pump subassembly
08/03/1994CN1090379A Reciprocating engine
08/03/1994CN1090208A Dispensing device
08/02/1994US5334003 Air valving mechanism, in combination with a double diaphragm pump subassembly
07/1994
07/27/1994CN2172814Y Double-suction pedal liquid pump
07/26/1994CA2113754A1 Air valving mechanism, in combination with a double diaphragm pump subassembly
07/20/1994EP0606980A2 Liquid chromatography system
07/20/1994CN2172355Y Pump in liquid
07/20/1994CN2172354Y Pedal water extracting machine
07/20/1994CN2172129Y 医用气泵 Medical pump
07/13/1994EP0373202B1 Piston pump for multiphase fluids and applications thereof
07/13/1994CN1025448C Sleeve type inflator
07/12/1994US5328339 Pump driven by air pressure
07/07/1994WO1994015090A1 Integrity confirmation of evaporative emission control system against leakage
07/06/1994CN2171015Y Hand operated towerless water supply small equipment
06/1994
06/29/1994CN2170386Y Double bottom valve water sucking machine operated by hand
06/29/1994CN1088664A Concrete pump with conveying cylinder, especially double-cylinders concrete pump
06/28/1994US5324175 Pneumatically operated reciprocating piston compressor
06/28/1994US5324173 High pressure intensifier
06/23/1994WO1994013954A1 Compact water filtration and purification pump
06/23/1994WO1994013518A1 Noise-reduced pumping set, in particular for regulated brake systems
06/22/1994EP0602389A1 Liquid spraying or foam delivering apparatus
06/22/1994CN2169703Y Oil pumping device
06/21/1994US5322422 Volumetric pump tube reshaper and method
06/21/1994US5322418 High pressure liquid pump apparatus and pumping method
06/16/1994DE4401680A1 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
06/16/1994DE4241825A1 Radial piston pump for controlled brake systems - has elastomeric damping layer between drive shaft and piston
06/15/1994CN2168965Y Automatic pump for bicycle and motorcycle
06/14/1994US5320498 Structure for plunger pump
06/14/1994US5320252 Liquid dispensing apparatus for dispensing a liquid under pressure from a container by means of pressurized fluid
06/09/1994WO1994012791A1 Disposable plastic liquid pump
06/09/1994WO1994012285A2 Dispensing device
06/08/1994CN2168089Y Pedal water-pumping device
06/08/1994CN2168088Y High-efficient pump without idle stroke
06/08/1994CN2168087Y Pedal-pump bathing douche
06/07/1994US5318317 Bicycle operated air pump
06/01/1994EP0599196A1 A water pumping apparatus
05/1994
05/31/1994US5316453 Slurry pump with discharge cylinders, especially two-cylinder concrete pump
05/31/1994US5316451 Valve porting for rotating barrel ram pump
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