| 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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| 05/15/2013 | CN103104433A Large-discharge built-in automatic reversing hydraulic plunger pump |
| 05/15/2013 | CN103104432A Liquid chromatograph constant flow pump |
| 05/15/2013 | CN103104431A Three-cylinder well drilling pump applied to petroleum industry |
| 05/15/2013 | CN103104430A Three-cylinder well drilling pump working method applied to petroleum industry |
| 05/15/2013 | CN103104429A Three-cylinder well drilling pump and working method thereof applied to petroleum industry |
| 05/15/2013 | CN102168663B Piston driving device in manual hydraulic pump |
| 05/09/2013 | US20130115116 Reciprocating compressor |
| 05/08/2013 | CN202926747U Hydraulic cylinder and pumping device comprising same |
| 05/08/2013 | CN103089563A Two-cylinder hydraulic pump |
| 05/08/2013 | CN103089527A Wave power generation system and wave power generation control method |
| 05/08/2013 | CN101865102B Automatic hydraulic augmented injection pump |
| 05/02/2013 | WO2013061229A2 Volumetric pressure exchanger for a seawater desalination plant and desalination plant |
| 05/01/2013 | EP2587074A1 Hydraulic pump control system for construction machinery |
| 05/01/2013 | CN202914261U Accumulated water pumping device for natural gas pipeline |
| 05/01/2013 | CN103080548A 流体旋转机械 Fluid rotating machinery |
| 05/01/2013 | CN102606439B Boosting water injection pump |
| 04/25/2013 | US20130098021 Hydraulic pump control system for construction machinery |
| 04/25/2013 | DE102012020476A1 Fuel pump for fuel injection system of internal combustion engine, has cam assemblies having additional cam set in circumferential direction between drive cams and defining intermediate stroke smaller than working stroke, for pistons |
| 04/24/2013 | CN202900814U Mud scraping harrow hydraulic lifting device provided with manual operating device |
| 04/24/2013 | CN202900561U Electromagnetic type pneumatic boosting water pump |
| 04/24/2013 | CN202900560U Pressure compensation device for oil hydraulic ceramic plunger mud pumps |
| 04/24/2013 | CN202900559U Water pumping machine |
| 04/24/2013 | CN103069162A Hydraulically actuated reciprocating pump |
| 04/24/2013 | CN103062008A Plastic energy-saving anti-pollution oil pumping device |
| 04/24/2013 | CN103062007A Power-free pressurizing system for water injection of oilfield |
| 04/24/2013 | CN103062006A Double-cylinder piston type mortar pump |
| 04/18/2013 | WO2013054829A1 Lifter structure |
| 04/17/2013 | CN202883286U Double-liquid synchronous grouting pump |
| 04/17/2013 | CN202883285U No-residue grout feeding and discharging structure for grout filling equipment |
| 04/17/2013 | CN202883284U Multi-cylinder piston pump |
| 04/17/2013 | CN103047101A Slurry pump exclusively for bauxite ore washing tailing slurry dry method processing and processing system and method thereof |
| 04/17/2013 | CN103047100A Rotor pump with cam shaft sleeve |
| 04/17/2013 | CN101392739B Controllable empty-drum piston type floating water-raising engine |
| 04/16/2013 | US8419377 Pumping device having a pressure adjustable function |
| 04/16/2013 | US8419376 Pumping device that is operated easily and safely |
| 04/16/2013 | CA2748468C Pump arrangement with two pump units, system, use and method |
| 04/10/2013 | EP2577063A2 A hydraulically actuated reciprocating pump |
| 04/10/2013 | CN202867121U Fully hydraulically controlled concrete delivery pump used for mining |
| 04/10/2013 | CN202867119U Pneumatic oil pump |
| 04/10/2013 | CN103032388A Swing valve hydraulic system of concrete pump and concrete pump |
| 04/10/2013 | CN103032304A Micro spraying ceramic plunger pump |
| 04/04/2013 | WO2013045598A2 Positive displacement pump and operating method thereof |
| 04/04/2013 | WO2013045165A1 Fuel pump assembly |
| 04/04/2013 | WO2013044529A1 Booster pump and reverse osmosis system applying same |
| 04/04/2013 | WO2013012697A3 System for enhanced recovery of tangential energy from an axial pump in a loop reactor |
| 04/04/2013 | CA2861136A1 Positive displacement pump and operating method thereof |
| 04/03/2013 | CN202851284U Portable lifting pump |
| 04/03/2013 | CN202851283U Vacuum feeding device |
| 04/03/2013 | CN202851282U Pneumatic infusion device |
| 04/03/2013 | CN202851281U hand-controlled hydraulic grouting pump |
| 04/03/2013 | CN103016289A Hydraulic direct-drive type mud pump |
| 03/28/2013 | US20130078119 Bearing arrangement for air compressor |
| 03/27/2013 | EP2572107A2 Removable shim clip for adjustable piston pump |
| 03/27/2013 | EP2572104A2 Offset cam for piston pump |
| 03/27/2013 | CN202833367U Mortar pump hydraulic system and mortar pump |
| 03/27/2013 | CN202833007U Press feed type soil and sand pump provided with built-in single-sleeve oil cylinder |
| 03/27/2013 | CN202833005U Improved hand pump for diesel engine fuel delivery pump |
| 03/27/2013 | CN202833004U Manual hydraulic pump |
| 03/27/2013 | CN202833003U No-clean pneumatic dual-fluid grouting pump |
| 03/27/2013 | CN202833002U Pumping machinery and pumping mechanism |
| 03/27/2013 | CN202832953U Hydraulic device for raising water level by using tidal energy |
| 03/27/2013 | CN102996389A Manual liquid high-pressure pump |
| 03/27/2013 | CN102996388A Dual-liquid synchronous grouting pump |
| 03/26/2013 | CA2652490C Motor-driven thrust piston pump apparatus |
| 03/21/2013 | WO2013037198A1 Water plunger pump and hydraulic control system thereof |
| 03/20/2013 | CN202811250U Hydraulic grouting pump |
| 03/20/2013 | CN202811244U Hand hydraulic pump |
| 03/20/2013 | CN202811243U Small-size combined pump station |
| 03/20/2013 | CN202811242U High-pressure reciprocation pump |
| 03/20/2013 | CN102168696B High-low pressure switching control system, concrete pumping system and device |
| 03/19/2013 | US8398379 Chemical liquid supplying apparatus |
| 03/14/2013 | WO2013035316A1 Accumulation-type trigger sprayer and accumulator valve |
| 03/14/2013 | WO2013033915A1 Method, apparatus, and system for controlling pumping direction-switching for use in pumping apparatus |
| 03/14/2013 | WO2012155068A3 A positive displacement multi-cyclinder pump |
| 03/14/2013 | US20130064693 Plunger pump for volumes below one microliter, allowing manual intervention |
| 03/14/2013 | DE10251342B4 Verfahren und Vorrichtung zum Entsalzen von Wasser mit Druckabfallüberbrückung Method and apparatus for desalinating water pressure drop bridging |
| 03/14/2013 | DE102011082434A1 Stößel Tappet |
| 03/13/2013 | EP2567143A1 System and process for equalization of pressure of a process flow stream across a valve |
| 03/13/2013 | EP2567092A1 Microfluidic component, in particular a peristaltic micropump, and method for producing same |
| 03/13/2013 | CN202789504U Differential motion type polymer-injecting pump |
| 03/13/2013 | CN202789368U Pneumatic three-fluid grouting pump |
| 03/13/2013 | CN202789367U Pneumatic oil pressure booster pump |
| 03/13/2013 | CN202789366U Ultrahigh-pressure miniature hydraulic pump |
| 03/13/2013 | CN202789256U Fuel filter |
| 03/13/2013 | CN102971534A Removable shim clip for adjustable piston pump |
| 03/13/2013 | CN102966508A Flat-turning and vertical high-pressure plunger pump |
| 03/13/2013 | CN102966507A Air pressure water pump |
| 03/13/2013 | CN102966505A Horizontal type volumetric water pump for generating power by utilizing energy of seawater surge |
| 03/13/2013 | CN102966492A Hydraulic impeller locking device of wind power generating set |
| 03/07/2013 | US20130058803 Tower frame combined transmitting pumping unit without guiding wheels |
| 03/07/2013 | DE102012215671A1 Fuel supply pump used in accumulator fuel injection device, has valve piston whose maximum stroke is controlled by engagement of outer edge portion on valve portion surface that is located opposite to outer edge portion |
| 03/06/2013 | CN102953953A Oil pump |
| 03/06/2013 | CN102953952A Oil pump on motor vehicle engine |
| 03/05/2013 | US8388321 Positive displacement pump apparatus |
| 03/05/2013 | CA2553320C Hydraulic motor arrangement and method of operating a hydraulic motor |
| 02/28/2013 | US20130052052 Inflating pump with auxiliary knotting functions |
| 02/27/2013 | CN202756193U Plunger pump and water purification device therewith |
| 02/27/2013 | CN202756192U Constant-proportion pneumatic water pump |
| 02/27/2013 | CN202756191U Horizontal-type single-cylinder double-plunger synchronous grouting pump |
| 02/27/2013 | CN202756190U Single plunger hydraulic pump |