| 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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| 08/07/2013 | CN103233875A Lateral ball type reversing pneumatic pump |
| 08/07/2013 | CN103233874A Method and device for saving electricity for ice making and freezing through ocean tide pressurized-water cooling |
| 08/06/2013 | US8500716 Medication reservoir |
| 08/05/2013 | DE202012012656U1 Pumpeneinheit mit rollendem Abgriff Pump unit with rolling tap |
| 08/01/2013 | WO2013001036A3 Fuel pump |
| 07/31/2013 | CN203098223U Small-type oil-well pump |
| 07/31/2013 | CN203098174U Biogas residue extracting device of rural biogas digester |
| 07/31/2013 | CN203098173U Rotor pump provided with cam shaft sleeve |
| 07/25/2013 | US20130189136 Air pump |
| 07/24/2013 | CN203081671U Semi-automatic hand pump |
| 07/24/2013 | CN203081670U Double-cylinder hydraulic pump |
| 07/23/2013 | US8491274 System for operating an air conditioning compressor from alternative sources |
| 07/18/2013 | WO2013106810A1 Compressor for pressurized fluid output |
| 07/18/2013 | US20130183169 Propulsion and motion-transmission assembly, in particular for a rotary-wing aircraft |
| 07/18/2013 | DE102012205845A1 Arrangement for conveying fluid to double piston pump, has control unit that is provided for controlling drive unit which is adapted to adjust force introduced into piston in cylinder |
| 07/17/2013 | EP2614256A2 High pressure pump including hollow stud |
| 07/17/2013 | DE202013102873U1 Drainagepumpenstruktur Drainage pump structure |
| 07/17/2013 | CN203067210U Oilfield high-flow reciprocating water injection pump |
| 07/17/2013 | CN203067207U Gas-liquid pump |
| 07/17/2013 | CN203067206U Automatic water pumping machine |
| 07/17/2013 | CN203067205U Novel coal bed methane well fixing pump |
| 07/17/2013 | CN103210209A Wave energy conversion |
| 07/17/2013 | CN103206339A Three-dimensional wave power generation device |
| 07/17/2013 | CN102261304B Rocker arm type ocean wave driven piston pump |
| 07/11/2013 | DE102011119447B4 Doppeltexzentrischer Kurbeltrieb mit Pleuelzahnrad Double Eccentric crank mechanism with Pleuelzahnrad |
| 07/10/2013 | CN203051020U Double-piston type water pumping device |
| 07/10/2013 | CN203051019U Tree root accumulated water pumping device |
| 07/10/2013 | CN203051018U Manual single plunger pump with unloading function |
| 07/10/2013 | CN203051017U Manual pedaled hydraulic pump |
| 07/10/2013 | CN203051016U Oilfield water injection unpowered pressurization system |
| 07/10/2013 | CN203051015U Large-displacement built-in automatic reverse hydraulic plunger pump |
| 07/10/2013 | CN203051014U Single-cylinder grouting pump |
| 07/10/2013 | CN103195681A Double-cam transmission mechanism of medical water jet scalpel |
| 07/10/2013 | CN102287350B Multi-purpose efficient pneumatic liquid pump |
| 07/04/2013 | WO2013061229A3 Volumetric pressure exchanger for a seawater desalination plant and desalination plant |
| 07/04/2013 | DE112011102631T5 Leistungsübertragungsvorrichtung Power transmission device |
| 07/03/2013 | EP2609329A1 Spray gun for expelling a fluid |
| 07/03/2013 | CN203035475U Gas/liquid integrated intelligent chemical grouting pump |
| 07/03/2013 | CN103189646A Fluid transfer device, ship equiped with same, and fluid for transfer device |
| 07/03/2013 | CN103184991A Novel water suction pump |
| 07/03/2013 | CN102341631B Solenoid valve apparatus |
| 06/27/2013 | US20130164156 Pump for Delivering a Product, Comprising a Piston Sliding in the Metering Chamber |
| 06/27/2013 | CA2838871A1 Cranked rod pump apparatus and method |
| 06/26/2013 | EP2606346A1 Apparatus for carrying out chromatography |
| 06/26/2013 | EP2606225A1 Wave energy conversion |
| 06/26/2013 | CN203022986U Multifunctional air inflating and oil pumping unit |
| 06/26/2013 | CN203022985U High pressure water injection device with function of preventing oil and water from being mixed |
| 06/20/2013 | WO2013090698A1 Valve activation in compressed-gas energy storage and recovery systems |
| 06/20/2013 | WO2013087593A1 Pressure intensifier, method for operating a pressure intensifier, and use of a pressure intensifier |
| 06/19/2013 | CN203009272U Flat-rotation vertical type high-pressure plunger pump easy to disassemble |
| 06/19/2013 | CN203009202U Special mud pump for bauxite ore washing tailing pulp dry treatment |
| 06/19/2013 | CN203009199U Hand oil pumping device |
| 06/19/2013 | CN203009198U High-inlet-pressure reciprocating pump fluid end |
| 06/19/2013 | CN203009197U Flat-turning and vertical high-pressure plunger pump |
| 06/19/2013 | CN203009196U High-pressure pump plunger driving device |
| 06/19/2013 | CN203009195U Horizontal type positive displacement water pump for sea surge power generation |
| 06/13/2013 | WO2013082909A1 Piston-type mortar pump and pumping system therefor |
| 06/13/2013 | WO2011104546A3 Fluid working machine and method of operating fluid working machine |
| 06/12/2013 | CN202991382U Manual high-low pressure pump |
| 06/12/2013 | CN202991381U Concrete pumping mechanism and concrete machinery with same |
| 06/12/2013 | CN202991370U Novel potential energy conversion device of water power piston pump |
| 06/12/2013 | CN202982290U High pressure water pump used for tooth washing device |
| 06/12/2013 | CN103147953A Novel ultrahigh-pressure boosting pump |
| 06/12/2013 | CN102220950B High-pressure water production device for water jet cutter |
| 06/12/2013 | CN101832244B Spraying inflation pump with L-shaped piston ring |
| 06/11/2013 | US8459958 Automatic compressor overpressure control |
| 06/07/2013 | DE202012101017U1 Vorrichtung zur Förderung liquider Medien Device for conveying liquid media |
| 06/05/2013 | CN202971164U Plunger pump device with exhaust function in spray cleaning machine |
| 06/05/2013 | CN202971163U Plunger pump device in spray cleaning machine |
| 06/05/2013 | CN202971073U Two-way plunger pump |
| 06/05/2013 | CN202971056U Wind generating set hydraulic type impeller locking device |
| 06/05/2013 | CN103140676A Liquid metering pump, and device for detecting the variation in pressure for such a pump |
| 06/05/2013 | CN103140675A Drive device |
| 06/05/2013 | CN103140674A Actuator-support structure and pump device |
| 06/05/2013 | CN103133293A Fixed ratio pneumatic water pump |
| 06/05/2013 | CN103133292A Static force hydroenergy water feeder |
| 06/04/2013 | US8454325 Coaxial pumping apparatus with internal power fluid column |
| 05/30/2013 | WO2013076437A1 Compressors, pumps and fluid motors |
| 05/30/2013 | WO2013045598A3 Positive displacement pump and operating method thereof |
| 05/29/2013 | EP2597308A1 Switchable pressure relief a lubricating device with piston pump |
| 05/29/2013 | EP2596857A1 Storage and mixing device for bone cement |
| 05/29/2013 | EP2596856A1 Device for mixing bone cement |
| 05/29/2013 | EP2596245A2 Fluid dose dispensing apparatus |
| 05/29/2013 | CN102057160B Double reciprocation pump |
| 05/29/2013 | CN101638910B Vacuum suction and discharge closestool with tap water pressure self drive type hydraulic cylinder |
| 05/23/2013 | WO2013074052A1 Energy generator |
| 05/23/2013 | WO2013073666A1 Plunger pump |
| 05/23/2013 | WO2013071996A1 Pressure-encapsulated pump housing |
| 05/23/2013 | US20130129532 Syringe Infusion Pump |
| 05/23/2013 | DE102011086703A1 Hochdruckpumpe High pressure pump |
| 05/22/2013 | CN202946336U Dual-power plunger type mortar pump for building engineering |
| 05/22/2013 | CN202946335U Dual-function bent axle foot step type hydraulic pump |
| 05/21/2013 | CA2637364C Hydraulic machine, in particular hydraulic motor, and metering device comprising such a motor |
| 05/16/2013 | US20130121854 Gearbox |
| 05/16/2013 | DE102012000359B3 Hand lever pump for connection to pressurized water line in e.g. park, has pump lever fastened with axis of rotation of half hollow ball, so that annular gap is maintained constantly between lever and pump dome during lever movement |
| 05/16/2013 | DE102011055161A1 Oil change barrel has barrel which is provided with cover on upper side and cylinder arranged in barrel and has drive, where drive extends from outer side of cover into cylinder |
| 05/15/2013 | CN202937436U Improved sealing structure for air exchange chamber |
| 05/15/2013 | CN202935352U Pneumatic control hydraulic device for railway dump trucks |
| 05/15/2013 | CN103109113A Power transmitting device |
| 05/15/2013 | CN103104434A Concrete piston automatic returning device in closed type pumping system |