| Patents for F04B 1 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (10,723) |
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| 03/06/2013 | CN102959243A 液压轴向活塞机器 Hydraulic axial piston machine |
| 03/05/2013 | US8388324 Device for metering out a flowable mass using a coaxial rotary piston and plunger |
| 03/05/2013 | US8388317 Direct crankshaft of air compressor |
| 02/28/2013 | WO2013028458A1 Multi-speed hydraulic pump |
| 02/28/2013 | WO2012162487A3 Pump having port plate pressure control |
| 02/28/2013 | US20130052041 Piston pump with cam actuated valves |
| 02/28/2013 | US20130047836 Multi-speed hydraulic pump |
| 02/28/2013 | DE112011101456T5 Hydraulikmotor/-pumpe mit variabler verstellung Hydraulic engine / pump with variable adjustment |
| 02/28/2013 | DE10322595B4 Kolbenpumpe, sowie Verfahren zu ihrer Herstellung Piston pump, as well as processes for their preparation |
| 02/28/2013 | DE102012015845A1 Kolbenpumpe mit nockenbetätigten Ventilen Piston pump with a cam operated valves |
| 02/28/2013 | DE102011053148A1 Radial piston pump used in vehicle, has check valves that are arranged in extension of pressure oil bores in housing cover provided with pressure accumulating chamber, and delivery piston which is provided in cylinder bores |
| 02/27/2013 | EP2562890A2 Electric motor driven liquid pump and brush for same |
| 02/27/2013 | CN202756232U Three-cylinder piston pump |
| 02/27/2013 | CN202756193U Plunger pump and water purification device therewith |
| 02/27/2013 | CN102947587A Axial piston machine |
| 02/27/2013 | CN102943752A Displacement-adjustment driving mechanism for hydraulic pump |
| 02/27/2013 | CN101849106B Plastic element, piston pump, and assembly method |
| 02/26/2013 | US8382449 Fluid machine with radial cylinders |
| 02/21/2013 | WO2013023687A1 Motor pump unit |
| 02/21/2013 | US20130042752 Pump Body |
| 02/20/2013 | EP2558720A1 Axial piston machine having a retraction plate, and method for the production thereof |
| 02/20/2013 | EP2558713A1 Connection plate for a hydrostatic piston machine |
| 02/20/2013 | EP2558707A1 High-pressure pump |
| 02/20/2013 | EP2558706A1 High-pressure pump |
| 02/20/2013 | CN202746172U Novel axial plunger pump |
| 02/20/2013 | CN202746131U Swash plate type variable displacement piston pump |
| 02/20/2013 | CN102939456A High-pressure pump |
| 02/19/2013 | CA2342932C Piston engine balancing |
| 02/14/2013 | WO2013022094A1 Sliding nut, sliding bearing for compressor, and cradle guide |
| 02/14/2013 | WO2013020789A1 Fuel pump |
| 02/14/2013 | WO2013020655A1 Stop device, adjusting cylinder with such a stop device, method for producing such a stop device and tool for performing the method |
| 02/14/2013 | DE102011109998A1 Axial piston machine of swash plate construction, has cylinder bores distributed over outer circumference of cylinder block connected in rotationally rigid and longitudinally movably manner, and shield blades arranged in the block |
| 02/14/2013 | DE102011080631A1 Piston pump i.e. radial piston pump, for use in motor vehicle applications, has resetting spring moving piston into inner position, and adjusting device activated such that resetting effect of spring is suppressed during rotation of shaft |
| 02/13/2013 | EP2557306A1 Fuel pump |
| 02/13/2013 | EP2556252A1 Annular seal element |
| 02/13/2013 | CN202732326U Swash plate plunger type hydraulic transformer controlled by swinging cylinder |
| 02/13/2013 | CN202732256U Valve flow distribution plunger pump |
| 02/13/2013 | CN102933846A Axial piston machine having a retraction plate, and method for the production thereof |
| 02/13/2013 | CN102926986A Rear cover of inclined-shaft plunger hydraulic pump |
| 02/13/2013 | CN102926959A Swash plate type axial piston pump or motor |
| 02/13/2013 | CN102926958A Oblique shaft type cylinder hydraulic pump |
| 02/13/2013 | CN102116290B Swing drum type positive displacement pump adopting cross shaft joint bearings |
| 02/13/2013 | CN101815863B Piston pump for delivering a fluid, and associated brake system |
| 02/12/2013 | US8371833 Supply device |
| 02/07/2013 | WO2013018146A1 Cylinder assembly for fluid working machine |
| 02/07/2013 | WO2013017343A1 Piston pump |
| 02/07/2013 | DE19957565B4 Geräuschgedämpfte hydrostatische Kolbenmaschine Noise-reduced hydrostatic piston engine |
| 02/07/2013 | DE102011085605A1 Pump unit for fuel pump utilized in common-rail injection system for internal combustion engine of motor car, has spring assembly axially arranged between plunger and roller shoe to limit force transferred by roller shoe on pump piston |
| 02/06/2013 | EP2554842A1 Valve plate, and axial piston hydraulic pump and axial piston hydraulic motor with same |
| 02/06/2013 | EP2554445A2 Guide ring of a pump element of a vehicle brake system |
| 02/06/2013 | CN102918233A Roller tappet |
| 02/06/2013 | CN102913409A 燃料供给装置 Fuel supply means |
| 02/06/2013 | CN102913408A Bent axis type plunger hydraulic pump/motor |
| 02/06/2013 | CN102913407A High-pressure constant-flow pump based on two-stage suspension transmission technology |
| 02/05/2013 | US8366407 Device for reducing pulsation in a variable displacement compressor |
| 01/31/2013 | WO2013013865A1 Piston pump for delivering fluids, and corresponding assembly process for a piston pump |
| 01/31/2013 | DE102011108960A1 Shoe for piston of hydraulic piston engine, has lubricant passage through which concave recess of sliding surface passes, and concave recess with constant tangent passes into transition section of taper portion of lubricant passage |
| 01/31/2013 | DE102004002489B4 Fluidpumpe, insbesondere Kraftstoff-Hochdruckpumpe Fluid pump, in particular high-pressure fuel pump |
| 01/30/2013 | EP2550432A1 Improved radial hydraulic motor |
| 01/30/2013 | CN102906416A Connection plate for a hydrostatic piston machine |
| 01/30/2013 | CN102906372A Improved radial hydraulic motor |
| 01/30/2013 | CN102900643A Hydraulic control circuit |
| 01/29/2013 | US8360742 Swash plate compressor |
| 01/24/2013 | WO2013010627A1 Roller tappet pump unit |
| 01/24/2013 | WO2013010320A1 Hydraulic variable pump and displacement control method thereof |
| 01/24/2013 | DE10100108B4 Hydrostatischer Axialkolbenmotor mit veränderbarem minimalen Verdrängervolumen in Abhängigkeit von dem Bremsdruck in der Ablaufseite des Axialkolbenmotors Hydrostatic axial piston variable displacement volume minimum as a function of the brake pressure in the discharge side of the axial piston motor |
| 01/23/2013 | EP2547906A1 Pump, in particular piston pump for high or low pressure |
| 01/23/2013 | CN202690345U Full-depth buoyancy adjusting seawater pump |
| 01/23/2013 | CN202690344U Full-water lubricating valve distributing plunger water pump |
| 01/23/2013 | CN102893027A Variable capacity hydraulic pump motor |
| 01/23/2013 | CN102893026A Recovered energy-type generating set and control method thereof |
| 01/23/2013 | CN101821138B Hydraulic piston pump |
| 01/23/2013 | CN101809284B Pump, particularly for a hydraulic unit of an electronically controlled vehicle brake unit |
| 01/22/2013 | US8356985 Safe over-center pump/motor |
| 01/17/2013 | WO2013009297A1 High pressure and flow rate pump useful in formation fluid sample testing |
| 01/17/2013 | WO2013007905A1 Combustion engine and pump assembly, and vehicle including such an assembly |
| 01/17/2013 | WO2013007566A1 Downhole hydraulic pump |
| 01/17/2013 | WO2011087576A3 Hydraulic machine with oil dams |
| 01/17/2013 | US20130017108 High pressure pump |
| 01/17/2013 | CA2840469A1 Downhole hydraulic pump |
| 01/17/2013 | CA2839680A1 High pressure and flow rate pump useful in formation fluid sample testing |
| 01/16/2013 | CN202673598U Novel eight-piston axial piston pump |
| 01/16/2013 | CN102884308A Subassembly forming a hydrobase for hydraulic motors, and assembly method |
| 01/16/2013 | CN101796265B An axial piston machine with rotation restraint mechanism |
| 01/15/2013 | US8353681 Compressor having a drive mechanism and a lubricant separator |
| 01/15/2013 | US8353680 Air conditioning compressor |
| 01/10/2013 | WO2013005703A1 Swash plate type hydraulic motor and swash plate type hydraulic pump |
| 01/10/2013 | WO2011150529A8 Piston pump device |
| 01/10/2013 | DE112011100941T5 Hydraulikpumpe/-Motor und Verfahren des Unterdrückens eines Pulsierens der/des Hydraulikpumpe/-Motors Hydraulic pump / motor and method of suppressing the pulsation / hydraulic pump / motor |
| 01/09/2013 | EP2543812A1 Downhole hydraulic pump |
| 01/09/2013 | EP2542779A1 Control device and method for controlling a torque of a drive shaft of a hydrostatic machine |
| 01/09/2013 | CN202659436U Regulator of load sensitive pump |
| 01/09/2013 | CN202659435U Opened low-speed and high-flow rate radial plunger pump |
| 01/09/2013 | CN102865207A Axial swash plate type hydraulic plunger pump |
| 01/09/2013 | CN102865206A High-speed pump |
| 01/09/2013 | CN102865205A Continuous liquid feeding system and control method thereof |
| 01/09/2013 | CN102200107B Floating balanced-type disc flow distribution radial plunger pump |
| 01/09/2013 | CN101328871B 活塞泵 Piston Pump |
| 01/08/2013 | US8348632 Variable displacement compressor shaft oil separator |
| 01/08/2013 | US8347778 Fluid-working machines |