| 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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| 07/22/2008 | CA2227859C Volumetric pump with bi-directional sphincter seal |
| 07/19/2008 | CA2618556A1 Electric submersible pump and motor assembly |
| 07/19/2008 | CA2618373A1 Wireline or coiled tubing deployed electric submersible pump |
| 07/17/2008 | WO2008085031A1 Positive displacement pump apparatus |
| 07/17/2008 | DE102007055748A1 Cam device for use with high pressure fuel pump, has tappet element exhibiting guiding section expanding gap between roller and tappet element, where outer circumference of roller reaches side during rotation of roller |
| 07/17/2008 | CA2674961A1 Positive displacement pump apparatus |
| 07/16/2008 | EP1753542B1 Simplified airless dispensing pump for liquid products |
| 07/16/2008 | CN101223391A Reciprocating pump |
| 07/16/2008 | CN100402724C Plastic knitting cloth water jet loom |
| 07/15/2008 | US7399167 Fluid machine operable in both pump mode and motor mode and waste heat recovering system having the same |
| 07/15/2008 | CA2502736C Method and device for desalinating water while overcoming decreases in pressure |
| 07/10/2008 | WO2008064376A3 Pumping arrangement |
| 07/10/2008 | DE102007001777A1 Handpumpe mit Bypass zur direkten Entnahme eines Fluids Hand pump with bypass to the direct removal of a fluid |
| 07/09/2008 | EP1334786B1 Mold cooling device |
| 07/09/2008 | CN201083189Y Vacuum supercharging hand pump |
| 07/09/2008 | CN101216023A Minisize rotation-proof screw hand pump |
| 07/09/2008 | CN100400195C Mold cooling device |
| 07/08/2008 | US7396218 Micro irrigation pump |
| 07/03/2008 | WO2008077758A1 High-pressure piston pump |
| 07/03/2008 | WO2008077408A1 Pump for feeding urea to an engine exhaust system |
| 07/03/2008 | DE202007002677U1 Spender für flüssige bis pastöse Massen Dispensers for liquid to pasty masses |
| 07/03/2008 | DE102006060659B3 Piston work machine e.g. pump or compressor, has control device loaded by pressure obtained at outlet duct, such that control device reduces intake volume with increased pressure and increases volume with decreased pressure |
| 07/02/2008 | CN201081220Y Dome lamp with air change fan |
| 07/02/2008 | CN201080911Y Plunger type quantitative hydraulic motor switch torque-changing valve-controlled oil dispensing subassembly |
| 07/02/2008 | CN201080910Y Pneumatic pump stop alarm system |
| 07/02/2008 | CN201080905Y Air-operated hydraulic pump |
| 07/02/2008 | CN201080904Y Electro-hydraulic switch torque-changing oil-dispensing type rotating cylinder barrel type quantitative plunger piston hydraulic motor |
| 07/02/2008 | CN201080903Y Multiphase step plunger piston hydraulic motor |
| 07/02/2008 | CN201080902Y Lever type self-pouring water bucket gravitational force piston-type pump |
| 07/02/2008 | CN201080901Y Axial plunger pump oil distributing disc |
| 07/02/2008 | CN201080900Y Emulsion pump for coal mine |
| 07/01/2008 | US7394182 Electroactive polymer devices for moving fluid |
| 07/01/2008 | US7392735 Manual liquid metering device and cartridge |
| 06/26/2008 | US20080152522 Fluid Pump and Motor Unit |
| 06/26/2008 | US20080152520 Hermetic compressor |
| 06/26/2008 | US20080152512 Infiltration pump having insulated rollers and programmable foot pedal |
| 06/26/2008 | DE102007055726A1 Cam device for use with e.g. oil pump, of vehicle, has roller comprising outer peripheral surface directly sliding on follower, where follower has free space e.g. feed through, at extension line of center line of piston |
| 06/26/2008 | DE102006060680A1 Wälzlager für eine Radial-Kolbenpumpe Rolling bearings for radial piston pump |
| 06/26/2008 | CA2673321A1 System for generating electrical power and potable water from sea waves |
| 06/25/2008 | CN201078312Y Five-plunger three-fulcrum bearing radial direction oil emulsion pump |
| 06/25/2008 | CN201078018Y High pressure type water flushing device for toilet |
| 06/25/2008 | CN201078010Y Waster water reuse apparatus |
| 06/25/2008 | CN101208516A Compressor for a tire repairing kit |
| 06/25/2008 | CN101208515A Fluid delivery device |
| 06/25/2008 | CN100396345C Blood separation systems using multiple function pump station to perform different on-line processing tasks |
| 06/19/2008 | DE202007001537U1 Hydraulikaggregat für hydraulische Kraftschrauben Hydraulic power unit for hydraulic screws |
| 06/19/2008 | DE102006059600A1 High-performance compressor, pump, brake or engine of modular construction has one or more double-action cylinders |
| 06/18/2008 | EP1931598A1 Manually operable water purifying device |
| 06/18/2008 | CN201074576Y 液压泵 Hydraulic pump |
| 06/18/2008 | CN201074575Y Novel delivery pump |
| 06/18/2008 | CN201074574Y Novel gray mortar slip-casting delivery pump |
| 06/18/2008 | CN201074573Y Dual-sleeve compressing oil cylinder internal-hiding type dust sand pump |
| 06/18/2008 | CN201073625Y Spume pump |
| 06/18/2008 | CN101201044A Connecting vessel structure similar buoyancy water lifter |
| 06/17/2008 | US7387728 Animal powered mechanical device for water desalination |
| 06/17/2008 | US7387221 Fluid discharge pumping apparatus |
| 06/12/2008 | DE102006057483A1 Oil lubricated eccentric drive for displacement machine, especially membrane pump has motion transfer member, is useful for membrane pumps and is safer in operation than previous eccentric drives |
| 06/12/2008 | DE102006057246A1 Mechanical tappet, in particular for reciprocal actuation of pump piston, has sleeve-shaped tappet housing which is configured as sheet metal moulding and has rotationally mounted drive roller |
| 06/11/2008 | EP1930592A1 Pump |
| 06/11/2008 | EP1447125B1 Pump for seawater desalination systems using reverse osmosis |
| 06/11/2008 | CN201071793Y Infusion device |
| 06/11/2008 | CN201071792Y Hydraulic water-pumping machine |
| 06/11/2008 | CN201071538Y Novel household water-saving toilet flushing system |
| 06/10/2008 | US7384246 Pump element and piston pump for generating high fuel pressure |
| 06/05/2008 | WO2008066635A1 Opposed pumping load high pressure common rail fuel pump |
| 06/05/2008 | DE19856917B4 Pumpenaggregat Pump unit |
| 06/04/2008 | EP1927736A2 Fluid pressure operated piston engine apparatus and method |
| 06/04/2008 | EP1749152B1 Drive device for a dual-cylinder slurry pump and method for operating said pump |
| 06/04/2008 | CN201068846Y Distributing transformer portable fuel charger |
| 06/04/2008 | CN201068845Y Super-high-pressure oil pump |
| 06/04/2008 | CN201068844Y Three-cylinder fluctuation-free reciprocating pump |
| 06/04/2008 | CN201067723Y Foot-actuated atomizer |
| 06/04/2008 | CN101191471A Hand-rocking type pipe water-well |
| 06/04/2008 | CN101191470A Electric control automatic reversing oiling machine drive air pump |
| 06/04/2008 | CN100392247C Concrete continuous pumping delivery method and concrete pump apparatus |
| 06/03/2008 | US7381035 Piston pump with check shaft |
| 06/03/2008 | CA2252329C Precision liquid injection system |
| 05/29/2008 | DE202007000915U1 Kolbenarbeitsmaschine Piston engine |
| 05/28/2008 | EP1925836A1 Torque transmission and limiting device |
| 05/28/2008 | EP1925811A1 Pump for a fluid, in particular manual pump for use in internal combustion engines operated with diesel fuel |
| 05/28/2008 | CN201065817Y Oil field operation plunger pump |
| 05/28/2008 | CN201065816Y Novel plunger slurry pump for oil field well drilling and repairing |
| 05/28/2008 | CN201065576Y Automatic flushing toilet for waste water utilization and water-saving |
| 05/28/2008 | CN101189426A Fuel feed pump and tappet structure |
| 05/27/2008 | US7378271 Bioreactor comprising culture bottle, jacket surrounding bottle defining deformable hollow space between jacket and bottle, communicating with end faces of bottle via hoses with valves for batchwise delivery of fluid by changes in volume of hollow space caused by deformation of hollow space; heart valves |
| 05/22/2008 | WO2008058571A1 Tension-force coupled high-pressure pumping |
| 05/22/2008 | US20080116145 Methods and apparatus for separating solids and dissolved constituents from fluids using an arrangement of separators and concentrators, which are pneumatically pressurized and depressurized at desired intervals via electronically controlled poppet valves, which results in the separation of particulates |
| 05/21/2008 | EP1923080A2 Diaphragm pump and pump mounted in a carrying case useful in breast pumping |
| 05/21/2008 | EP1922483A1 Pump or compressor unit |
| 05/21/2008 | CN201062718Y Charging lamp with electric fan |
| 05/15/2008 | WO2008002505A3 Deactivating hydraulic piston pump-high pressure |
| 05/14/2008 | EP1727980B1 Device and method for controlling a two-cylinder thick matter pump |
| 05/14/2008 | CN201059250Y Self-effusion bucket gravity piston water pump |
| 05/14/2008 | CN100387854C Crank shaft |
| 05/08/2008 | WO2008019889A8 Pressure booster with double-seat valve |
| 05/08/2008 | WO2007119149A3 Displacement dosing device and corresponding movement apparatus |
| 05/08/2008 | DE102006026220B4 Fluidpumpe mit Kurbeltrieb Fluid pump with crank drive |
| 05/06/2008 | US7368862 Electroactive polymer generators |
| 05/06/2008 | US7367785 Reduced icing valves and gas-driven motor and reciprocating pump incorporating same |
| 04/30/2008 | EP1915532A1 High-pressure gas compressor and method of operating a high-pressure gas compressor |