| Patents for F04B 53 - Component parts, details or accessories not provided for in, or of interest apart from, groups or (19,443) |
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| 07/01/1994 | CA2112730A1 Pump for viscous matter, comprising a rotative distribution device |
| 06/30/1994 | DE4243667A1 Piston pump for hydraulic system with non-return type inlet valve |
| 06/28/1994 | US5324173 High pressure intensifier |
| 06/23/1994 | WO1994013956A1 Metering pump with vent |
| 06/23/1994 | WO1994013954A1 Compact water filtration and purification pump |
| 06/23/1994 | WO1994013518A1 Noise-reduced pumping set, in particular for regulated brake systems |
| 06/23/1994 | DE4242420A1 Pump for vehicle hydraulic antilock braking system |
| 06/23/1994 | CA2151030A1 A metering pump with a vent valve |
| 06/15/1994 | CN1025064C high pressure water pump |
| 06/14/1994 | US5320498 Structure for plunger pump |
| 06/09/1994 | WO1994012791A1 Disposable plastic liquid pump |
| 06/09/1994 | WO1994012789A1 Valve with few components, especially a pressure valve for a radial piston pump |
| 06/09/1994 | WO1994012375A1 Immersion-proof abs/drive slip control pumping assembly with check valve |
| 06/07/1994 | US5318407 Check valve having internal float |
| 06/01/1994 | EP0599738A1 Fluid-tight piston pump |
| 06/01/1994 | DE4241030C1 Dosierpumpe mit Entlüftungsventil Metering pump with air vent |
| 06/01/1994 | CN1024835C Piston assembly |
| 05/31/1994 | US5316445 Pumping apparatus with piston seal and cylinder removing means |
| 05/31/1994 | US5316036 Retainer plate assembly for pump housing |
| 05/26/1994 | DE4239464A1 Electrothermal static micro-pump with fluid-pressure-operated valve - drives liq. past resilient flap into outlet by expansion of vapour bubble generated by electric heating element |
| 05/26/1994 | DE4239362A1 Ventil, insbesondere Druckventil für eine Radialkolbenpumpe, mit wenigen Komponenten Valve, in particular pressure valve for a radial piston pump, with few components |
| 05/26/1994 | DE4239361A1 Tauchdichtes ABS/ASR-Pumpenaggregat mit Rückschlagventil Diving Waterproof ABS / ASR-pump unit with non-return valve |
| 05/24/1994 | US5314025 Fluid pumping apparatus and method of pumping fluid |
| 05/11/1994 | WO1994010445A1 High pressure pump for accurate dosing of liquids |
| 05/10/1994 | US5310323 Plunger pump |
| 05/10/1994 | US5310321 Pump system |
| 05/10/1994 | US5310308 Automotive fuel pump housing with rotary pumping element |
| 05/05/1994 | DE4308467A1 Hochdruckpumpe zur Flüssigkeits-Feindosierung High pressure pump for liquid fine dosing |
| 05/05/1994 | DE4236682A1 Hydraulic radial piston pump for vehicle braking system - uses pair of packing rings to act as pressure and suction valves |
| 05/03/1994 | US5307731 Housing system for hydraulic units |
| 04/27/1994 | EP0593913A2 Electrically driven hydraulic pump |
| 04/27/1994 | EP0593645A1 Quick-change fluid section for piston-type paint pumps |
| 04/26/1994 | US5306122 Diaphragm pump construction |
| 04/21/1994 | DE4235052A1 Connection for pipe to housing - is used esp. for brake system pump housing and has box nut locking milled pipe end, with damping piece |
| 04/21/1994 | DE4234750A1 Delivery pump for vehicle braking system - uses throttle responsive to opening pressure of by=pass valve which can overcome pre-set evacuation negative pressure at pump outlet |
| 04/20/1994 | EP0592943A1 Coffee-making machine |
| 04/20/1994 | EP0592395A1 A displacement pump as well as a pump assembly comprising two displacement pumps. |
| 04/20/1994 | CN1024293C Closed compression engine |
| 04/19/1994 | CA1328577C Pump and valve apparatus |
| 04/12/1994 | US5302094 Tube switch for a double-cylinder sludge pump |
| 04/12/1994 | US5302087 High pressure pump with loaded compression rods and method |
| 04/07/1994 | DE4333578A1 Hydraulic pump for vehicle antilock brake - uses piston with pair of seals insertable into housing bore |
| 04/05/1994 | US5299921 Manifold for a front-discharge fluid end reciprocating pump |
| 03/31/1994 | WO1994006658A1 Pump with integral sump |
| 03/29/1994 | US5297927 Vertical shaft type pump |
| 03/29/1994 | US5297580 High pressure ball and seat valve with soft seal |
| 03/24/1994 | DE4231784A1 Electrically-driven hydraulic pump - cools control stage for collectorless electric motor by hydraulic fluid handled by pump |
| 03/23/1994 | EP0587912A1 Fluid controlling microdevice and method of manufacturing the same |
| 03/22/1994 | US5295809 Valved piston pump with cylinder biasing means |
| 03/17/1994 | WO1994005910A1 Self-cleaning reciprocating and/or rotating device |
| 03/09/1994 | EP0479793B1 Submersible motor-driven pump |
| 03/08/1994 | US5292236 Positive displacement pump with pivot piston valve |
| 03/08/1994 | US5292235 Membranes and neighboring members in pumps, compressors and devices |
| 03/03/1994 | WO1994004821A1 Tube switch for a double-cylinder sludge pump |
| 03/03/1994 | DE4321787A1 Non-return spring-loaded ball valve for dosing pump - forms valve seat with annular sealing edge having diameter smaller than that of elastomeric ball, and joined by spherical sealing edge to second annular edge |
| 03/03/1994 | CA2136611A1 Tube switch for a double-cylinder sludge pump |
| 03/01/1994 | US5290156 Walking beam compressor assembly |
| 02/19/1994 | CA2076342A1 Method of sealing a tubing type of subsurface pump having a reciprocating cylindrical plunger |
| 02/17/1994 | WO1994003135A1 Method and apparatus for introducing fluid material into an eye |
| 02/17/1994 | DE4227037A1 Hydrostatic axial piston pump - uses three beings for two shafts to reduce structural length |
| 02/16/1994 | EP0378645B1 Improved high pressure reciprocating pump |
| 02/08/1994 | US5284425 Fluid metering pump |
| 02/08/1994 | US5284084 For reciprocating inside of a cylinder |
| 02/02/1994 | EP0580747A1 Plunger pump |
| 02/01/1994 | US5282724 Modular check valve system |
| 02/01/1994 | US5282552 Disposable plastic liquid pump |
| 02/01/1994 | CA2101034A1 Quiet check valve |
| 01/27/1994 | DE4323796A1 Method of removing residual concrete from hopper and delivery pipe of piston type pump - involves running pump empty to create air pressure expelling part of residual concrete and then pumping water behind sponge to expel remainder |
| 01/26/1994 | EP0580196A1 Pump comprising a partially hollow piston |
| 01/25/1994 | US5280746 Pressure fluid pump for a brake system |
| 01/21/1994 | CA2100837A1 Pump comprising a partially hollow piston, and its applications especially in the petroleum industry |
| 01/20/1994 | DE4223757A1 Fuel injection device for IC engine - has pump chamber, and intake and pressure valves in common valve housing, fitted sealed into pump housing |
| 01/20/1994 | DE4223756A1 Fuel pump for two=stroke engine in power tool - has pressure valve placed within suction valve to define pump chamber |
| 01/18/1994 | US5279210 Fluid control system |
| 01/18/1994 | CA1326132C2 Pump liners and a method of cladding the same |
| 01/13/1994 | DE4322560A1 Radial piston pump - has pistons with increased cross section at seal with flat base against eccentric intermediate |
| 01/12/1994 | EP0578390A1 An integrated electric motor-driven inline hydraulic apparatus |
| 01/12/1994 | EP0578005A1 Sound-dampened hydrostatic fluid displacement machine |
| 01/12/1994 | EP0377047B1 Main bearing device for motor of bent axis type axial piston pump |
| 01/11/1994 | US5277560 Ring valve type air compressor with deformable ring valves |
| 01/11/1994 | US5277556 Valve and micropump incorporating said valve |
| 01/11/1994 | US5277553 Valve-controlled displacer unit having valve triggering |
| 01/06/1994 | WO1993018306A3 Hydraulic oil well pump drive system |
| 01/05/1994 | EP0576467A1 Distillation. |
| 01/04/1994 | US5275541 Fluid-operated valve for pumps and the like |
| 01/04/1994 | US5275539 Internal combustion engine oil pump |
| 01/04/1994 | US5275204 Valve element |
| 12/28/1993 | US5273405 Fluid cushioning apparatus for hydraulic intensifier assembly |
| 12/23/1993 | DE4219664A1 Delivery unit for displacement action metering pump - incorporates auxiliary pump to ensure adequate delivery of very small volumes. |
| 12/23/1993 | DE4219663A1 Fluid controlled feed pump - has pump chamber with vol. enlarged on suction stroke and reduced on pressure stroke, having venting valve at upper end |
| 12/22/1993 | EP0574420A1 High-pressure cleaning device. |
| 12/09/1993 | DE4318073A1 Radial piston pump with pot-shaped pistons - uses inserts concentric with piston springs to minimise fluid dead space |
| 12/07/1993 | CA1325025C Packing assembly for use in a plunger bore |
| 12/02/1993 | DE4238376A1 Radial piston pump with elastic valve ring - uses fluid pressure from pistons to rotate valve ring and so distribute wear uniformly |
| 11/30/1993 | US5265331 Method of manufacturing a piston for an axial piston fluid translating device |
| 11/25/1993 | WO1993023670A1 Hydrostatic engine with oil leakage channel |
| 11/18/1993 | DE4223019C1 Electromechanical valveless microminiature pump - has membrane actuator for applying oscillation perpendicular to fluid flow and anisotropic structure e.g. mfd by etching of silicon wafer. |
| 11/16/1993 | US5262065 Purification and decontamination of aquifiers using pumps, pipes and sleeves |
| 11/11/1993 | DE4314689A1 Hydraulic vane pump or motor - has aluminium@ alloy body with cast-in delivery medium channel of varying cross-section and shape |
| 11/10/1993 | EP0569262A1 Volumetric pump |